use of assignment statement in java

1.7 Java | Assignment Statements & Expressions

An assignment statement designates a value for a variable. An assignment statement can be used as an expression in Java.

After a variable is declared, you can assign a value to it by using an assignment statement . In Java, the equal sign = is used as the assignment operator . The syntax for assignment statements is as follows:

An expression represents a computation involving values, variables, and operators that, when taking them together, evaluates to a value. For example, consider the following code:

You can use a variable in an expression. A variable can also be used on both sides of the =  operator. For example:

In the above assignment statement, the result of x + 1  is assigned to the variable x . Let’s say that x is 1 before the statement is executed, and so becomes 2 after the statement execution.

To assign a value to a variable, you must place the variable name to the left of the assignment operator. Thus the following statement is wrong:

Note that the math equation  x = 2 * x + 1  ≠ the Java expression x = 2 * x + 1

Which is equivalent to:

And this statement

is equivalent to:

Note: The data type of a variable on the left must be compatible with the data type of a value on the right. For example, int x = 1.0 would be illegal, because the data type of x is int (integer) and does not accept the double value 1.0 without Type Casting .

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1.4. Expressions and Assignment Statements ¶

In this lesson, you will learn about assignment statements and expressions that contain math operators and variables.

1.4.1. Assignment Statements ¶

Remember that a variable holds a value that can change or vary. Assignment statements initialize or change the value stored in a variable using the assignment operator = . An assignment statement always has a single variable on the left hand side of the = sign. The value of the expression on the right hand side of the = sign (which can contain math operators and other variables) is copied into the memory location of the variable on the left hand side.

Figure 1: Assignment Statement (variable = expression) ¶

Instead of saying equals for the = operator in an assignment statement, say “gets” or “is assigned” to remember that the variable on the left hand side gets or is assigned the value on the right. In the figure above, score is assigned the value of 10 times points (which is another variable) plus 5.

The following video by Dr. Colleen Lewis shows how variables can change values in memory using assignment statements.

As we saw in the video, we can set one variable to a copy of the value of another variable like y = x;. This won’t change the value of the variable that you are copying from.

Click on the Show CodeLens button to step through the code and see how the values of the variables change.

The program is supposed to figure out the total money value given the number of dimes, quarters and nickels. There is an error in the calculation of the total. Fix the error to compute the correct amount.

Calculate and print the total pay given the weekly salary and the number of weeks worked. Use string concatenation with the totalPay variable to produce the output Total Pay = $3000 . Don’t hardcode the number 3000 in your print statement.

Assume you have a package with a given height 3 inches and width 5 inches. If the package is rotated 90 degrees, you should swap the values for the height and width. The code below makes an attempt to swap the values stored in two variables h and w, which represent height and width. Variable h should end up with w’s initial value of 5 and w should get h’s initial value of 3. Unfortunately this code has an error and does not work. Use the CodeLens to step through the code to understand why it fails to swap the values in h and w.

1-4-7: Explain in your own words why the ErrorSwap program code does not swap the values stored in h and w.

Swapping two variables requires a third variable. Before assigning h = w , you need to store the original value of h in the temporary variable. In the mixed up programs below, drag the blocks to the right to put them in the right order.

The following has the correct code that uses a third variable named “temp” to swap the values in h and w.

The code is mixed up and contains one extra block which is not needed in a correct solution. Drag the needed blocks from the left into the correct order on the right, then check your solution. You will be told if any of the blocks are in the wrong order or if you need to remove one or more blocks.

After three incorrect attempts you will be able to use the Help Me button to make the problem easier.

Fix the code below to perform a correct swap of h and w. You need to add a new variable named temp to use for the swap.

1.4.2. Incrementing the value of a variable ¶

If you use a variable to keep score you would probably increment it (add one to the current value) whenever score should go up. You can do this by setting the variable to the current value of the variable plus one (score = score + 1) as shown below. The formula looks a little crazy in math class, but it makes sense in coding because the variable on the left is set to the value of the arithmetic expression on the right. So, the score variable is set to the previous value of score + 1.

Click on the Show CodeLens button to step through the code and see how the score value changes.

1-4-11: What is the value of b after the following code executes?

• It sets the value for the variable on the left to the value from evaluating the right side. What is 5 * 2?
• Correct. 5 * 2 is 10.

1-4-12: What are the values of x, y, and z after the following code executes?

• x = 0, y = 1, z = 2
• These are the initial values in the variable, but the values are changed.
• x = 1, y = 2, z = 3
• x changes to y's initial value, y's value is doubled, and z is set to 3
• x = 2, y = 2, z = 3
• Remember that the equal sign doesn't mean that the two sides are equal. It sets the value for the variable on the left to the value from evaluating the right side.
• x = 1, y = 0, z = 3

1.4.3. Operators ¶

Java uses the standard mathematical operators for addition ( + ), subtraction ( - ), multiplication ( * ), and division ( / ). Arithmetic expressions can be of type int or double. An arithmetic operation that uses two int values will evaluate to an int value. An arithmetic operation that uses at least one double value will evaluate to a double value. (You may have noticed that + was also used to put text together in the input program above – more on this when we talk about strings.)

Java uses the operator == to test if the value on the left is equal to the value on the right and != to test if two items are not equal. Don’t get one equal sign = confused with two equal signs == ! They mean different things in Java. One equal sign is used to assign a value to a variable. Two equal signs are used to test a variable to see if it is a certain value and that returns true or false as you’ll see below. Use == and != only with int values and not doubles because double values are an approximation and 3.3333 will not equal 3.3334 even though they are very close.

Run the code below to see all the operators in action. Do all of those operators do what you expected? What about 2 / 3 ? Isn’t surprising that it prints 0 ? See the note below.

When Java sees you doing integer division (or any operation with integers) it assumes you want an integer result so it throws away anything after the decimal point in the answer, essentially rounding down the answer to a whole number. If you need a double answer, you should make at least one of the values in the expression a double like 2.0.

With division, another thing to watch out for is dividing by 0. An attempt to divide an integer by zero will result in an ArithmeticException error message. Try it in one of the active code windows above.

Operators can be used to create compound expressions with more than one operator. You can either use a literal value which is a fixed value like 2, or variables in them. When compound expressions are evaluated, operator precedence rules are used, so that *, /, and % are done before + and -. However, anything in parentheses is done first. It doesn’t hurt to put in extra parentheses if you are unsure as to what will be done first.

In the example below, try to guess what it will print out and then run it to see if you are right. Remember to consider operator precedence .

1-4-15: Consider the following code segment. Be careful about integer division.

What is printed when the code segment is executed?

• 0.666666666666667
• Don't forget that division and multiplication will be done first due to operator precedence.
• Yes, this is equivalent to (5 + ((a/b)*c) - 1).
• Don't forget that division and multiplication will be done first due to operator precedence, and that an int/int gives an int result where it is rounded down to the nearest int.

1-4-16: Consider the following code segment.

What is the value of the expression?

• Dividing an integer by an integer results in an integer
• Correct. Dividing an integer by an integer results in an integer
• The value 5.5 will be rounded down to 5

1-4-17: Consider the following code segment.

• Correct. Dividing a double by an integer results in a double
• Dividing a double by an integer results in a double

1-4-18: Consider the following code segment.

• Correct. Dividing an integer by an double results in a double
• Dividing an integer by an double results in a double

1.4.4. The Modulo Operator ¶

The percent sign operator ( % ) is the mod (modulo) or remainder operator. The mod operator ( x % y ) returns the remainder after you divide x (first number) by y (second number) so 5 % 2 will return 1 since 2 goes into 5 two times with a remainder of 1. Remember long division when you had to specify how many times one number went into another evenly and the remainder? That remainder is what is returned by the modulo operator.

Figure 2: Long division showing the whole number result and the remainder ¶

In the example below, try to guess what it will print out and then run it to see if you are right.

The result of x % y when x is smaller than y is always x . The value y can’t go into x at all (goes in 0 times), since x is smaller than y , so the result is just x . So if you see 2 % 3 the result is 2 .

1-4-21: What is the result of 158 % 10?

• This would be the result of 158 divided by 10. modulo gives you the remainder.
• modulo gives you the remainder after the division.
• When you divide 158 by 10 you get a remainder of 8.

1-4-22: What is the result of 3 % 8?

• 8 goes into 3 no times so the remainder is 3. The remainder of a smaller number divided by a larger number is always the smaller number!
• This would be the remainder if the question was 8 % 3 but here we are asking for the reminder after we divide 3 by 8.
• What is the remainder after you divide 3 by 8?

1.4.5. FlowCharting ¶

Assume you have 16 pieces of pizza and 5 people. If everyone gets the same number of slices, how many slices does each person get? Are there any leftover pieces?

In industry, a flowchart is used to describe a process through symbols and text. A flowchart usually does not show variable declarations, but it can show assignment statements (drawn as rectangle) and output statements (drawn as rhomboid).

The flowchart in figure 3 shows a process to compute the fair distribution of pizza slices among a number of people. The process relies on integer division to determine slices per person, and the mod operator to determine remaining slices.

Figure 3: Example Flow Chart ¶

A flowchart shows pseudo-code, which is like Java but not exactly the same. Syntactic details like semi-colons are omitted, and input and output is described in abstract terms.

Complete the program based on the process shown in the Figure 3 flowchart. Note the first line of code declares all 4 variables as type int. Add assignment statements and print statements to compute and print the slices per person and leftover slices. Use System.out.println for output.

1.4.6. Storing User Input in Variables ¶

Variables are a powerful abstraction in programming because the same algorithm can be used with different input values saved in variables.

Figure 4: Program input and output ¶

A Java program can ask the user to type in one or more values. The Java class Scanner is used to read from the keyboard input stream, which is referenced by System.in . Normally the keyboard input is typed into a console window, but since this is running in a browser you will type in a small textbox window displayed below the code. The code below shows an example of prompting the user to enter a name and then printing a greeting. The code String name = scan.nextLine() gets the string value you enter as program input and then stores the value in a variable.

Run the program a few times, typing in a different name. The code works for any name: behold, the power of variables!

Run this program to read in a name from the input stream. You can type a different name in the input window shown below the code.

Try stepping through the code with the CodeLens tool to see how the name variable is assigned to the value read by the scanner. You will have to click “Hide CodeLens” and then “Show in CodeLens” to enter a different name for input.

The Scanner class has several useful methods for reading user input. A token is a sequence of characters separated by white space.

Run this program to read in an integer from the input stream. You can type a different integer value in the input window shown below the code.

A rhomboid (slanted rectangle) is used in a flowchart to depict data flowing into and out of a program. The previous flowchart in Figure 3 used a rhomboid to indicate program output. A rhomboid is also used to denote reading a value from the input stream.

Figure 5: Flow Chart Reading User Input ¶

Figure 5 contains an updated version of the pizza calculator process. The first two steps have been altered to initialize the pizzaSlices and numPeople variables by reading two values from the input stream. In Java this will be done using a Scanner object and reading from System.in.

Complete the program based on the process shown in the Figure 5 flowchart. The program should scan two integer values to initialize pizzaSlices and numPeople. Run the program a few times to experiment with different values for input. What happens if you enter 0 for the number of people? The program will bomb due to division by zero! We will see how to prevent this in a later lesson.

The program below reads two integer values from the input stream and attempts to print the sum. Unfortunately there is a problem with the last line of code that prints the sum.

Run the program and look at the result. When the input is 5 and 7 , the output is Sum is 57 . Both of the + operators in the print statement are performing string concatenation. While the first + operator should perform string concatenation, the second + operator should perform addition. You can force the second + operator to perform addition by putting the arithmetic expression in parentheses ( num1 + num2 ) .

More information on using the Scanner class can be found here https://www.w3schools.com/java/java_user_input.asp

1.4.7. Programming Challenge : Dog Years ¶

In this programming challenge, you will calculate your age, and your pet’s age from your birthdates, and your pet’s age in dog years. In the code below, type in the current year, the year you were born, the year your dog or cat was born (if you don’t have one, make one up!) in the variables below. Then write formulas in assignment statements to calculate how old you are, how old your dog or cat is, and how old they are in dog years which is 7 times a human year. Finally, print it all out.

Calculate your age and your pet’s age from the birthdates, and then your pet’s age in dog years. If you want an extra challenge, try reading the values using a Scanner.

1.4.8. Summary ¶

Arithmetic expressions include expressions of type int and double.

The arithmetic operators consist of +, -, * , /, and % (modulo for the remainder in division).

An arithmetic operation that uses two int values will evaluate to an int value. With integer division, any decimal part in the result will be thrown away, essentially rounding down the answer to a whole number.

An arithmetic operation that uses at least one double value will evaluate to a double value.

Operators can be used to construct compound expressions.

During evaluation, operands are associated with operators according to operator precedence to determine how they are grouped. (*, /, % have precedence over + and -, unless parentheses are used to group those.)

An attempt to divide an integer by zero will result in an ArithmeticException to occur.

The assignment operator (=) allows a program to initialize or change the value stored in a variable. The value of the expression on the right is stored in the variable on the left.

During execution, expressions are evaluated to produce a single value.

The value of an expression has a type based on the evaluation of the expression.

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Java - Assignment Operators with Examples

Java assignment operators.

Following are the assignment operators supported by Java language −

The following programs are simple examples which demonstrate the assignment operators. Copy and paste the following Java programs as Test.java file, and compile and run the programs −

In this example, we're creating three variables a,b and c and using assignment operators . We've performed simple assignment, addition AND assignment, subtraction AND assignment and multiplication AND assignment operations and printed the results.

In this example, we're creating two variables a and c and using assignment operators . We've performed Divide AND assignment, Multiply AND assignment, Modulus AND assignment, bitwise exclusive OR AND assignment, OR AND assignment operations and printed the results.

In this example, we're creating two variables a and c and using assignment operators . We've performed Left shift AND assignment, Right shift AND assignment, operations and printed the results.

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Assignment Operator in Java with Example

Assignment operator is one of the simplest and most used operator in java programming language. As the name itself suggests, the assignment operator is used to assign value inside a variable. In java we can divide assignment operator in two types :

• Assignment operator or simple assignment operator
• Compound assignment operators

What is assignment operator in java

The = operator in java is known as assignment or simple assignment operator. It assigns the value on its right side to the operand(variable) on its left side. For example :

The left-hand side of an assignment operator must be a variable while the right side of it should be a value which can be in the form of a constant value, a variable name, an expression, a method call returning a compatible value or a combination of these.

The value at right side of assignment operator must be compatible with the data type of left side variable, otherwise compiler will throw compilation error. Following are incorrect assignment :

Another important thing about assignment operator is that, it is evaluated from right to left . If there is an expression at right side of assignment operator, it is evaluated first then the resulted value is assigned in left side variable.

Here in statement int x = a + b + c; the expression a + b + c is evaluated first, then the resulted value( 60 ) is assigned into x . Similarly in statement a = b = c , first the value of c which is 30 is assigned into b and then the value of b which is now 30 is assigned into a .

The variable at left side of an assignment operator can also be a non-primitive variable. For example if we have a class MyFirstProgram , we can assign object of MyFirstProgram class using = operator in MyFirstProgram type variable.

Is == an assignment operator ?

No , it's not an assignment operator, it's a relational operator used to compare two values.

Is assignment operator a binary operator

Yes , as it requires two operands.

Assignment operator program in Java

a = 2 b = 2 c = 4 d = 4 e = false

Java compound assignment operators

The assignment operator can be mixed or compound with other operators like addition, subtraction, multiplication etc. We call such assignment operators as compound assignment operator. For example :

Here the statement a += 10; is the short version of a = a + 10; the operator += is basically addition compound assignment operator. Similarly b *= 5; is short version of b = b * 5; the operator *= is multiplication compound assignment operator. The compound assignment can be in more complex form as well, like below :

List of all assignment operators in Java

The table below shows the list of all possible assignment(simple and compound) operators in java. Consider a is an integer variable for this table.

How many assignment operators are there in Java ?

Including simple and compound assignment we have total 12 assignment operators in java as given in above table.

What is shorthand operator in Java ?

Shorthand operators are nothing new they are just a shorter way to write something that is already available in java language. For example the code a += 5 is shorter way to write a = a + 5 , so += is a shorthand operator. In java all the compound assignment operator(given above) and the increment/decrement operators are basically shorthand operators.

Compound assignment operator program in Java

a = 20 b = 80 c = 30 s = 64 s2 = 110 b2 = 15

What is the difference between += and =+ in Java?

An expression a += 1 will result as a = a + 1 while the expression a =+ 1 will result as a = +1 . The correct compound statement is += , not =+ , so do not use the later one.

Java Assignment Operators

Java programming tutorial index.

The Java Assignment Operators are used when you want to assign a value to the expression. The assignment operator denoted by the single equal sign = .

In a Java assignment statement, any expression can be on the right side and the left side must be a variable name. For example, this does not mean that "a" is equal to "b", instead, it means assigning the value of 'b' to 'a'. It is as follows:

Java also has the facility of chain assignment operators, where we can specify a single value for multiple variables.

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Java Assignment Operators

Description.

Assigning a value to a variable seems straightforward enough; you simply assign the stuff on the right side of the '= 'to the variable on the left. Below statement 1 assigning value 10 to variable x and statement 2 is creating String object called name and assigning value "Amit" to it.

Assignment can be of various types. Let’s discuss each in detail.

Primitive Assignment:

The equal (=) sign is used for assigning a value to a variable. We can assign a primitive variable using a literal or the result of an expression.

Primitive Casting

Casting lets you convert primitive values from one type to another. We need to provide casting when we are trying to assign higher precision primitive to lower precision primitive for example If we try to assign int variable (which is in the range of byte variable) to byte variable then the compiler will throw an exception called "possible loss of precision". Eclipse IDE will suggest the solution as well as shown below. To avoid such problem we should use type casting which will instruct compiler for type conversion.

For cases where we try to assign smaller container variable to larger container variables we do not need of explicit casting. The compiler will take care of those type conversions. For example, we can assign byte variable or short variable to an int without any explicit casting.

Assigning Literal that is too large for a variable

When we try to assign a variable value which is too large (or out of range ) for a primitive variable then the compiler will throw exception “possible loss of precision” if we try to provide explicit cast then the compiler will accept it but narrowed down the value using two’s complement method. Let’s take an example of the byte which has 8-bit storage space and range -128 to 127. In below program we are trying to assign 129 literal value to byte primitive type which is out of range for byte so compiler converted it to -127 using two’s complement method. Refer link for two’s complement calculation (http://en.wikipedia.org/wiki/Two's_complement)

Java Code: Go to the editor

Reference variable assignment

We can assign newly created object to object reference variable as below

First line will do following things,

• Makes a reference variable named s of type String
• Creates a new String object on the heap memory
• Assigns the newly created String object to the reference variables

You can also assign null to an object reference variable, which simply means the variable is not referring to any object. The below statement creates space for the Employee reference variable (the bit holder for a reference value) but doesn't create an actual Employee object.

Compound Assignment Operators

Sometime we need to modify the same variable value and reassigned it to a same reference variable. Java allows you to combine assignment and addition operators using a shorthand operator. For example, the preceding statement can be written as:

The += is called the addition assignment operator. Other shorthand operators are shown below table

Below is the sample program explaining assignment operators:

• Assigning a value to can be straight forward or casting.
• If we assign the value which is out of range of variable type then 2’s complement is assigned.
• Java supports shortcut/compound assignment operator.

Java Code Editor:

Previous: Wrapper classes Next: Arithmetic Operator

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1. How to execute the assignment statement

1. explaining how to execute the assignment statement.

2. Homework assignment HW1

The first question is easy ---you can copy from the first video or its transcript on the pdf file. Questions 2 and 3 ask about the if-statement and if-else statement. These are the same as in just about any programming language, except for the syntax, of course. So use your knowledge of these statements in whatever programming language you know.

1. Write the algorithm for executing the Java assignment statement <variable>= <expression>; 2. Write the algorithm for executing the Java if-statement               if (<boolean-expression>) <statement 1> 3. Write the algorithm for executing the Java if-else-statement               if (<boolean-expression>) <statement 1> else <statement 2> 4. Tell us in a few words what you thought of the videos on presenting algorithms in English and executing the assignment statement, their message, and the homework.

The Java Tutorials have been written for JDK 8. Examples and practices described in this page don't take advantage of improvements introduced in later releases and might use technology no longer available. See Java Language Changes for a summary of updated language features in Java SE 9 and subsequent releases. See JDK Release Notes for information about new features, enhancements, and removed or deprecated options for all JDK releases.

Expressions, Statements, and Blocks

Now that you understand variables and operators, it's time to learn about expressions , statements , and blocks . Operators may be used in building expressions, which compute values; expressions are the core components of statements; statements may be grouped into blocks.

Expressions

An expression is a construct made up of variables, operators, and method invocations, which are constructed according to the syntax of the language, that evaluates to a single value. You've already seen examples of expressions, illustrated in bold below:

The data type of the value returned by an expression depends on the elements used in the expression. The expression cadence = 0 returns an int because the assignment operator returns a value of the same data type as its left-hand operand; in this case, cadence is an int . As you can see from the other expressions, an expression can return other types of values as well, such as boolean or String .

The Java programming language allows you to construct compound expressions from various smaller expressions as long as the data type required by one part of the expression matches the data type of the other. Here's an example of a compound expression:

In this particular example, the order in which the expression is evaluated is unimportant because the result of multiplication is independent of order; the outcome is always the same, no matter in which order you apply the multiplications. However, this is not true of all expressions. For example, the following expression gives different results, depending on whether you perform the addition or the division operation first:

You can specify exactly how an expression will be evaluated using balanced parenthesis: ( and ). For example, to make the previous expression unambiguous, you could write the following:

If you don't explicitly indicate the order for the operations to be performed, the order is determined by the precedence assigned to the operators in use within the expression. Operators that have a higher precedence get evaluated first. For example, the division operator has a higher precedence than does the addition operator. Therefore, the following two statements are equivalent:

When writing compound expressions, be explicit and indicate with parentheses which operators should be evaluated first. This practice makes code easier to read and to maintain.

Statements are roughly equivalent to sentences in natural languages. A statement forms a complete unit of execution. The following types of expressions can be made into a statement by terminating the expression with a semicolon ( ; ).

• Assignment expressions
• Any use of ++ or --
• Method invocations
• Object creation expressions

Such statements are called expression statements . Here are some examples of expression statements.

In addition to expression statements, there are two other kinds of statements: declaration statements and control flow statements . A declaration statement declares a variable. You've seen many examples of declaration statements already:

Finally, control flow statements regulate the order in which statements get executed. You'll learn about control flow statements in the next section, Control Flow Statements

A block is a group of zero or more statements between balanced braces and can be used anywhere a single statement is allowed. The following example, BlockDemo , illustrates the use of blocks:

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What Is an Assignment Statement in Java?

Java programs store data values in variables. When a programmer creates a variable in a Java application, he declares the type and name of the variable, then assigns a value to it. The value of a variable can be altered at subsequent points in execution using further assignment operations. The assignment statement in Java involves using the assignment operator to set the value of a variable. The exact syntax depends on the type of variable receiving a value.

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In Java, variables are strongly typed. This means that when you declare a variable in a Java program, you must declare its type, followed by its name. The following sample Java code demonstrates declaring two variables, one of primitive-type integer and one of an object type for a class within the application: int num; ApplicationHelper myHelp;

Once a program contains a variable declaration, the kind of value assigned to the variable must be suited to the type declared. These variable declarations could be followed by assignment statements on subsequent lines. However, the assignment operation could also take place on the same line as the declaration.

Assignment in Java is the process of giving a value to a primitive-type variable or giving an object reference to an object-type variable. The equals sign acts as assignment operator in Java, followed by the value to assign. The following sample Java code demonstrates assigning a value to a primitive-type integer variable, which has already been declared: num = 5;

The assignment operation could alternatively appear within the same line of code as the declaration of the variable, as follows: int num = 5;

The value of the variable can be altered again in subsequent processing as in this example: num++;

This code increments the variable value, adding a value of one to it.

Instantiation

When the assignment statement appears with object references, the assignment operation may also involve object instantiation. When Java code creates a new object instance of a Java class in an application, the "new" keyword causes the constructor method of the class to execute, instantiating the object. The following sample code demonstrates instantiating an object variable: myHelp = new ApplicationHelper();

This could also appear within the same line as the variable declaration as follows: ApplicationHelper myHelp = new ApplicationHelper();

When this line of code executes, the class constructor method executes, returning an instance of the class, a reference to which is stored by the variable.

Referencing

Once a variable has been declared and assigned a value, a Java program can refer to the variable in subsequent processing. For primitive-type variables, the variable name refers to a stored value. For object types, the variable refers to the location of the object instance in memory. This means that two object variables can point to the same instance, as in the following sample code: ApplicationHelper myHelp = new ApplicationHelper(); ApplicationHelper sameHelp = myHelp;

This syntax appears commonly when programs pass object references as parameters to class methods.

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Compound assignment operators in Java

Compound-assignment operators provide a shorter syntax for assigning the result of an arithmetic or bitwise operator. They perform the operation on the two operands before assigning the result to the first operand. The following are all possible assignment operator in java:

Implementation of all compound assignment operator

Rules for resolving the Compound assignment operators

At run time, the expression is evaluated in one of two ways.Depending upon the programming conditions:

• First, the left-hand operand is evaluated to produce a variable. If this evaluation completes abruptly, then the assignment expression completes abruptly for the same reason; the right-hand operand is not evaluated and no assignment occurs.
• Otherwise, the value of the left-hand operand is saved and then the right-hand operand is evaluated. If this evaluation completes abruptly, then the assignment expression completes abruptly for the same reason and no assignment occurs.
• Otherwise, the saved value of the left-hand variable and the value of the right-hand operand are used to perform the binary operation indicated by the compound assignment operator. If this operation completes abruptly, then the assignment expression completes abruptly for the same reason and no assignment occurs.
• Otherwise, the result of the binary operation is converted to the type of the left-hand variable, subjected to value set conversion to the appropriate standard value set, and the result of the conversion is stored into the variable.
• First, the array reference sub-expression of the left-hand operand array access expression is evaluated. If this evaluation completes abruptly, then the assignment expression completes abruptly for the same reason; the index sub-expression (of the left-hand operand array access expression) and the right-hand operand are not evaluated and no assignment occurs.
• Otherwise, the index sub-expression of the left-hand operand array access expression is evaluated. If this evaluation completes abruptly, then the assignment expression completes abruptly for the same reason and the right-hand operand is not evaluated and no assignment occurs.
• Otherwise, if the value of the array reference sub-expression is null, then no assignment occurs and a NullPointerException is thrown.
• Otherwise, the value of the array reference sub-expression indeed refers to an array. If the value of the index sub-expression is less than zero, or greater than or equal to the length of the array, then no assignment occurs and an ArrayIndexOutOfBoundsException is thrown.
• Otherwise, the value of the index sub-expression is used to select a component of the array referred to by the value of the array reference sub-expression. The value of this component is saved and then the right-hand operand is evaluated. If this evaluation completes abruptly, then the assignment expression completes abruptly for the same reason and no assignment occurs.

Examples : Resolving the statements with Compound assignment operators

We all know that whenever we are assigning a bigger value to a smaller data type variable then we have to perform explicit type casting to get the result without any compile-time error. If we did not perform explicit type-casting then we will get compile time error. But in the case of compound assignment operators internally type-casting will be performed automatically, even we are assigning a bigger value to a smaller data-type variable but there may be a chance of loss of data information. The programmer will not responsible to perform explicit type-casting. Let’s see the below example to find the difference between normal assignment operator and compound assignment operator. A compound assignment expression of the form E1 op= E2 is equivalent to E1 = (T) ((E1) op (E2)), where T is the type of E1, except that E1 is evaluated only once.

For example, the following code is correct:

and results in x having the value 7 because it is equivalent to:

Because here 6.6 which is double is automatically converted to short type without explicit type-casting.

Refer: When is the Type-conversion required?

Explanation: In the above example, we are using normal assignment operator. Here we are assigning an int (b+1=20) value to byte variable (i.e. b) that’s results in compile time error. Here we have to do type-casting to get the result.

Explanation: In the above example, we are using compound assignment operator. Here we are assigning an int (b+1=20) value to byte variable (i.e. b) apart from that we get the result as 20 because In compound assignment operator type-casting is automatically done by compile. Here we don’t have to do type-casting to get the result.

Reference: http://docs.oracle.com/javase/specs/jls/se7/html/jls-15.html#jls-15.26.2

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Operators are used to perform operations on variables and values.

In the example below, we use the + operator to add together two values:

Try it Yourself »

Although the + operator is often used to add together two values, like in the example above, it can also be used to add together a variable and a value, or a variable and another variable:

Java divides the operators into the following groups:

• Arithmetic operators
• Assignment operators
• Comparison operators
• Logical operators
• Bitwise operators

Arithmetic Operators

Arithmetic operators are used to perform common mathematical operations.

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Java Assignment Operators

Assignment operators are used to assign values to variables.

In the example below, we use the assignment operator ( = ) to assign the value 10 to a variable called x :

The addition assignment operator ( += ) adds a value to a variable:

A list of all assignment operators:

Java Comparison Operators

Comparison operators are used to compare two values (or variables). This is important in programming, because it helps us to find answers and make decisions.

The return value of a comparison is either true or false . These values are known as Boolean values , and you will learn more about them in the Booleans and If..Else chapter.

In the following example, we use the greater than operator ( > ) to find out if 5 is greater than 3:

Java Logical Operators

You can also test for true or false values with logical operators.

Logical operators are used to determine the logic between variables or values:

Java Bitwise Operators

Bitwise operators are used to perform binary logic with the bits of an integer or long integer.

Note: The Bitwise examples above use 4-bit unsigned examples, but Java uses 32-bit signed integers and 64-bit signed long integers. Because of this, in Java, ~5 will not return 10. It will return -6. ~00000000000000000000000000000101 will return 11111111111111111111111111111010

In Java, 9 >> 1 will not return 12. It will return 4. 00000000000000000000000000001001 >> 1 will return 00000000000000000000000000000100

Test Yourself With Exercises

Multiply 10 with 5 , and print the result.

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Operators are symbols that perform operations on variables and values. For example, + is an operator used for addition, while * is also an operator used for multiplication.

Operators in Java can be classified into 5 types:

• Arithmetic Operators
• Assignment Operators
• Relational Operators
• Logical Operators
• Unary Operators
• Bitwise Operators

1. Java Arithmetic Operators

Arithmetic operators are used to perform arithmetic operations on variables and data. For example,

Here, the + operator is used to add two variables a and b . Similarly, there are various other arithmetic operators in Java.

Example 1: Arithmetic Operators

In the above example, we have used + , - , and * operators to compute addition, subtraction, and multiplication operations.

/ Division Operator

Note the operation, a / b in our program. The / operator is the division operator.

If we use the division operator with two integers, then the resulting quotient will also be an integer. And, if one of the operands is a floating-point number, we will get the result will also be in floating-point.

% Modulo Operator

The modulo operator % computes the remainder. When a = 7 is divided by b = 4 , the remainder is 3 .

Note : The % operator is mainly used with integers.

2. Java Assignment Operators

Assignment operators are used in Java to assign values to variables. For example,

Here, = is the assignment operator. It assigns the value on its right to the variable on its left. That is, 5 is assigned to the variable age .

Let's see some more assignment operators available in Java.

Example 2: Assignment Operators

3. java relational operators.

Relational operators are used to check the relationship between two operands. For example,

Here, < operator is the relational operator. It checks if a is less than b or not.

It returns either true or false .

Example 3: Relational Operators

Note : Relational operators are used in decision making and loops.

4. Java Logical Operators

Logical operators are used to check whether an expression is true or false . They are used in decision making.

Example 4: Logical Operators

Working of Program

• (5 > 3) && (8 > 5) returns true because both (5 > 3) and (8 > 5) are true .
• (5 > 3) && (8 < 5) returns false because the expression (8 < 5) is false .
• (5 < 3) || (8 > 5) returns true because the expression (8 > 5) is true .
• (5 > 3) || (8 < 5) returns true because the expression (5 > 3) is true .
• (5 < 3) || (8 < 5) returns false because both (5 < 3) and (8 < 5) are false .
• !(5 == 3) returns true because 5 == 3 is false .
• !(5 > 3) returns false because 5 > 3 is true .

5. Java Unary Operators

Unary operators are used with only one operand. For example, ++ is a unary operator that increases the value of a variable by 1 . That is, ++5 will return 6 .

Different types of unary operators are:

• Increment and Decrement Operators

Java also provides increment and decrement operators: ++ and -- respectively. ++ increases the value of the operand by 1 , while -- decrease it by 1 . For example,

Here, the value of num gets increased to 6 from its initial value of 5 .

Example 5: Increment and Decrement Operators

In the above program, we have used the ++ and -- operator as prefixes (++a, --b) . We can also use these operators as postfix (a++, b++) .

There is a slight difference when these operators are used as prefix versus when they are used as a postfix.

To learn more about these operators, visit increment and decrement operators .

6. Java Bitwise Operators

Bitwise operators in Java are used to perform operations on individual bits. For example,

Here, ~ is a bitwise operator. It inverts the value of each bit ( 0 to 1 and 1 to 0 ).

The various bitwise operators present in Java are:

These operators are not generally used in Java. To learn more, visit Java Bitwise and Bit Shift Operators .

Other operators

Besides these operators, there are other additional operators in Java.

The instanceof operator checks whether an object is an instanceof a particular class. For example,

Here, str is an instance of the String class. Hence, the instanceof operator returns true . To learn more, visit Java instanceof .

The ternary operator (conditional operator) is shorthand for the if-then-else statement. For example,

Here's how it works.

• If the Expression is true , expression1 is assigned to the variable .
• If the Expression is false , expression2 is assigned to the variable .

Let's see an example of a ternary operator.

In the above example, we have used the ternary operator to check if the year is a leap year or not. To learn more, visit the Java ternary operator .

Now that you know about Java operators, it's time to know about the order in which operators are evaluated. To learn more, visit Java Operator Precedence .

Table of Contents

• Introduction
• Java Arithmetic Operators
• Java Assignment Operators
• Java Relational Operators
• Java Logical Operators
• Java Unary Operators
• Java Bitwise Operators

Before we wrap up, let’s put your knowledge of Java Operators: Arithmetic, Relational, Logical and more to the test! Can you solve the following challenge?

Write a function to return the largest of two given numbers.

• Return the largest of two given numbers num1 and num2 .
• For example, if num1 = 4 and num2 = 5 , the expected output is 5 .

Sorry about that.

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• StringBuffer class
• StringBuilder class
• String vs StringBuffer
• StringBuffer vs Builder
• Creating Immutable class
• toString method
• StringTokenizer class
• Java String FAQs

Java String Methods

• String charAt()
• String compareTo()
• String concat()
• String contains()
• String endsWith()
• String equals()
• equalsIgnoreCase()
• String format()
• String getBytes()
• String getChars()
• String indexOf()
• String intern()
• String isEmpty()
• String join()
• String lastIndexOf()
• String length()
• String replace()
• String replaceAll()
• String split()
• String startsWith()
• String substring()
• String toCharArray()
• String toLowerCase()
• String toUpperCase()
• String trim()

Exception Handling

• Java Exceptions
• Java Try-catch block
• Java Multiple Catch Block
• Java Nested try
• Java Finally Block
• Java Throw Keyword
• Java Exception Propagation
• Java Throws Keyword
• Java Throw vs Throws
• Final vs Finally vs Finalize
• Exception Handling with Method Overriding
• Java Custom Exceptions

Java Inner Class

• What is inner class
• Member Inner class
• Anonymous Inner class
• Local Inner class
• static nested class
• Nested Interface

Java Multithreading

• What is Multithreading
• Life Cycle of a Thread
• How to Create Thread
• Thread Scheduler
• Sleeping a thread
• Start a thread twice
• Calling run() method
• Joining a thread
• Naming a thread
• Thread Priority
• Daemon Thread
• Thread Pool
• Thread Group
• ShutdownHook
• Performing multiple task
• Garbage Collection
• Runtime class

Java Synchronization

• Synchronization in java
• synchronized block
• static synchronization
• Deadlock in Java
• Inter-thread Comm
• Interrupting Thread
• Reentrant Monitor

Java Networking

• Networking Concepts
• Socket Programming
• URLConnection class
• HttpURLConnection
• InetAddress class

Java Applet

• Applet Basics
• Graphics in Applet
• Displaying image in Applet
• Animation in Applet
• EventHandling in Applet
• JApplet class
• Painting in Applet
• Digital Clock in Applet
• Analog Clock in Applet
• Parameter in Applet
• Applet Communication

Java Reflection

• Reflection API
• newInstance() method
• creating javap tool
• creating appletviewer
• Call private method

Java Conversion

• Java String to int
• Java int to String
• Java String to long
• Java long to String
• Java String to float
• Java float to String
• Java String to double
• Java double to String
• Java String to Date
• Java Date to String
• Java String to char
• Java char to String
• Java String to Object
• Java Object to String
• Java int to long
• Java long to int
• Java int to double
• Java double to int
• Java char to int
• Java int to char
• Java String to boolean
• Java boolean to String
• Date to Timestamp
• Timestamp to Date
• Binary to Decimal
• Decimal to Binary
• Hex to Decimal
• Decimal to Hex
• Octal to Decimal
• Decimal to Octal
• JDBC Introduction
• JDBC Driver
• DB Connectivity Steps
• Connectivity with Oracle
• Connectivity with MySQL
• Access without DSN
• DriverManager
• PreparedStatement
• ResultSetMetaData
• DatabaseMetaData
• Store image
• Retrieve image
• Retrieve file
• CallableStatement
• Transaction Management
• Batch Processing
• RowSet Interface
• Internationalization
• ResourceBundle class
• I18N with Date
• I18N with Time
• I18N with Number
• I18N with Currency
• Java Array Class
• getBoolean()
• getDouble()
• getLength()
• newInstance()
• setBoolean()
• setDouble()
• Java AtomicInteger Class
• addAndGet(int delta)
• compareAndSet(int expect, int update)
• decrementAndGet()
• doubleValue()
• floatValue()
• getAndAdd()
• getAndDecrement()
• getAndSet()
• incrementAndGet()
• getAndIncrement()
• lazySet(int newValue)
• longValue()
• set(int newValue)
• weakCompareAndSet(int expect,int newValue)
• Java AtomicLong Methods
• addAndGet()
• compareAndSet()
• weakCompareAndSet()
• Java Authenticator
• getPasswordAuthentication()
• getRequestingHost()
• getRequestingPort()
• getRequestingPrompt()
• getRequestingProtocol()
• getRequestingScheme()
• getRequestingSite()
• getRequestingURL()
• getRequestorType()
• setDefault()
• Java BigDecimal class
• intValueExact()
• movePointLeft()
• movePointRight()
• Big Integer Class
• bitLength()
• compareTo()
• divideAndRemainder()
• getLowestSetBit()
• isProbablePrime()
• modInverse()
• nextProbablePrime()
• probablePrime()
• shiftLeft()
• shiftRight()
• toByteArray()
• Java Boolean class
• booleanValue()
• logicalAnd()
• logicalOr()
• logicalXor()
• parseBoolean()

Java Byte Class

• byteValue()
• compareUnsigned()
• parseByte()
• shortValue()
• toUnsignedInt()
• toUnsignedLong()
• asSubclass()
• desiredAssertionStatus()
• getAnnotatedInterfaces()
• getAnnotatedSuperclass()
• getAnnotation()
• getAnnotationsByType()
• getAnnotations()
• getCanonicalName()
• getClasses()
• getClassLoader()
• getComponentType
• getConstructor()
• getConstructors()
• getDeclaredAnnotation()
• getDeclaredAnnotationsByType()
• getDeclaredAnnotations()
• getDeclaredConstructor()
• getDeclaredConstructors()
• getDeclaredField()
• getDeclaredFields()
• getDeclaredMethod()
• getDeclaredMethods()
• getDeclaringClass()
• getFields()
• getGenericInterfaces()
• getGenericSuperClass()
• getInterfaces()
• getMethod()
• getMethods()
• getModifiers()
• getPackage()
• getPackageName()
• getProtectionDomain()
• getResource()
• getSigners()
• getSimpleName()
• getSuperClass()
• isAnnotation()
• isAnnotationPresent()
• isAnonymousClass()
• isInstance()
• isInterface()
• isPrimitive()
• isSynthetic()
• Java Collections class
• asLifoQueue()
• binarySearch()
• checkedCollection()
• checkedList()
• checkedMap()
• checkedNavigableMap()
• checkedNavigableSet()
• checkedQueue()
• checkedSet()
• checkedSortedMap()
• checkedSortedSet()
• emptyEnumeration()
• emptyIterator()
• emptyList()
• emptyListIterator()
• emptyNavigableMap()
• emptyNavigableSet()
• emptySortedMap()
• emptySortedSet()
• enumeration()
• frequency()
• indexOfSubList()
• lastIndexOfSubList()
• newSetFromMap()
• replaceAll()
• reverseOrder()
• singleton()
• singletonList()
• singletonMap()
• synchronizedCollection()
• synchronizedList()
• synchronizedMap()
• synchronizedNavigableMap()
• synchronizedNavigableSet()
• synchronizedSet()
• synchronizedSortedMap()
• synchronizedSortedSet()
• unmodifiableCollection()
• unmodifiableList()
• unmodifiableMap()
• unmodifiableNavigableMap()
• unmodifiableNavigableSet()
• unmodifiableSet()
• unmodifiableSortedMap()
• unmodifiableSortedSet()

Java Compiler Class

• Java Compiler
• compileClass()
• compileClasses()

CopyOnWriteArrayList

• Java CopyOnWriteArrayList
• lastIndexOf()

Java Math Methods

• Math.round()
• Math.sqrt()
• Math.cbrt()
• Math.signum()
• Math.ceil()
• Math.copySign()
• Math.nextAfter()
• Math.nextUp()
• Math.nextDown()
• Math.floor()
• Math.floorDiv()
• Math.random()
• Math.rint()
• Math.hypot()
• Math.getExponent()
• Math.IEEEremainder()
• Math.addExact()
• Math.subtractExact()
• Math.multiplyExact()
• Math.incrementExact()
• Math.decrementExact()
• Math.negateExact()
• Math.toIntExact()
• Math.log10()
• Math.log1p()
• Math.expm1()
• Math.asin()
• Math.acos()
• Math.atan()
• Math.sinh()
• Math.cosh()
• Math.tanh()
• Math.toDegrees
• Math.toRadians

LinkedBlockingDeque

• Java LinkedBlockingDeque
• descendingIterator()
• offerFirst()
• offerLast()
• peekFirst()
• pollFirst()
• Java Long class

LinkedTransferQueue

• Java LinkedTransferQueue
• spliterator()
• Difference between Array and ArrayList
• When to use ArrayList and LinkedList in Java
• Difference between ArrayList and Vector
• How to Compare Two ArrayList in Java
• How to reverse ArrayList in Java
• How to make ArrayList Read Only
• Difference between length of array and size() of ArrayList in Java
• How to Synchronize ArrayList in Java
• How to convert ArrayList to Array and Array to ArrayList in java
• Array vs ArrayList in Java
• How to Sort Java ArrayList in Descending Order
• How to remove duplicates from ArrayList in Java
• Java MulticastSocket
• getInterface()
• getLoopbackMode()
• getNetworkInterface()
• getTimeToLive()
• joinGroup()
• leaveGroup()
• setInterface()
• setLoopbackMode()
• setNetworkInterface()
• setTimeToLive()
• Java Number Class

Java Phaser Class

• Java Phaser
• arriveAndAwaitAdvance()
• arriveAndDeregister()
• getParent()
• awaitAdvanceInterruptibly()
• awaitAdvance()
• bulkRegister()
• forceTermination()
• getArrivedParties()
• getRegisteredParties()
• getUnarrivedParties()
• isTerminated()

ArrayList Methods

• listIterator()
• removeRange

Java Thread Methods

• currentThread()
• getPriority()
• setPriority()
• setDaemon()
• interrupt()
• isinterrupted()
• interrupted()
• activeCount()
• checkAccess()
• dumpStack()
• getStackTrace()
• enumerate()
• getThreadGroup()
• notifyAll()
• setContextClassLoader()
• getContextClassLoader()
• getDefaultUncaughtExceptionHandler()
• setDefaultUncaughtExceptionHandler()

Java Projects

• Free Java Projects
• Payment Bill(JSP)
• Transport (JSP)
• Connect Globe (JSP)
• Online Banking (JSP)
• Online Quiz (JSP)
• Classified (JSP)
• Mailcasting (JSP)
• Online Library (JSP)
• Pharmacy (JSP)
• Mailer (Servlet)
• Baby Care (Servlet)
• Chat Server (Core)
• Library (Core)
• Exam System (Core)
• Java Apps (Core)
• Fee Report (Core)
• Fee (Servlet)
• eLibrary (Servlet)
• Fire Detection
• Attendance System
• Fibonacci Series in Java
• Prime Number Program in Java
• Palindrome Program in Java
• Factorial Program in Java
• Armstrong Number in Java
• How to Generate Random Number in Java
• How to Print Pattern in Java
• How to Compare Two Objects in Java
• How to Create Object in Java
• How to Print ASCII Value in Java
• How to Reverse a Number in Java
• Java Program to convert Number to Word
• Automorphic Number Program in Java
• Peterson Number in Java
• Sunny Number in Java
• Tech Number in Java
• Fascinating Number in Java
• Keith Number in Java
• Neon Number in Java
• Spy Number in Java
• ATM program Java
• Autobiographical Number in Java
• Emirp Number in Java
• Sphenic Number in Java
• Buzz Number Java
• Duck Number Java
• Evil Number Java
• ISBN Number Java
• Krishnamurthy Number Java
• Bouncy Number in Java
• Mystery Number in Java
• Smith Number in Java
• Strontio Number in Java
• Xylem and Phloem Number in Java
• nth Prime Number Java
• Java Program to Display Alternate Prime Numbers
• Java Program to Find Square Root of a Number Without sqrt Method
• Java Program to Swap Two Numbers Using Bitwise Operator
• Java Program to Find GCD of Two Numbers
• Java Program to Find Largest of Three Numbers
• Java Program to Find Smallest of Three Numbers Using Ternary Operator
• Java Program to Check if a Number is Positive or Negative
• Java Program to Check if a Given Number is Perfect Square
• Java Program to Display Even Numbers From 1 to 100
• Java Program to Display Odd Numbers From 1 to 100
• Java Program to Find Sum of Natural Numbers
• Java Program to copy all elements of one array into another array
• Java Program to find the frequency of each element in the array
• Java Program to left rotate the elements of an array
• Java Program to print the duplicate elements of an array
• Java Program to print the elements of an array
• Java Program to print the elements of an array in reverse order
• Java Program to print the elements of an array present on even position
• Java Program to print the elements of an array present on odd position
• Java Program to print the largest element in an array
• Java Program to print the smallest element in an array
• Java Program to print the number of elements present in an array
• Java Program to print the sum of all the items of the array
• Java Program to right rotate the elements of an array
• Java Program to sort the elements of an array in ascending order
• Java Program to sort the elements of an array in descending order
• Java Program to Find 3rd Largest Number in an array
• Java Program to Find 2nd Largest Number in an array
• Java Program to Find Largest Number in an array
• Java to Program Find 2nd Smallest Number in an array
• Java Program to Find Smallest Number in an array
• Java Program to Remove Duplicate Element in an array
• Java Program to Print Odd and Even Numbers from an array
• How to Sort an Array in Java
• Java Matrix Programs
• Java Program to Add Two Matrices
• Java Program to Multiply Two Matrices
• Java Program to subtract the two matrices
• Java Program to determine whether two matrices are equal
• Java Program to display the lower triangular matrix
• Java Program to display the upper triangular matrix
• Java Program to find the frequency of odd & even numbers in the given matrix
• Java Program to find the product of two matrices
• Java Program to find the sum of each row and each column of a matrix
• Java Program to find the transpose of a given matrix
• Java Program to determine whether a given matrix is an identity matrix
• Java Program to determine whether a given matrix is a sparse matrix
• Java Program to Transpose matrix
• Java Program to count the total number of characters in a string
• Java Program to count the total number of characters in a string 2
• Java Program to count the total number of punctuation characters exists in a String
• Java Program to count the total number of vowels and consonants in a string
• Java Program to determine whether two strings are the anagram
• Java Program to divide a string in 'N' equal parts.
• Java Program to find all subsets of a string
• Java Program to find the longest repeating sequence in a string
• Java Program to find all the permutations of a string
• Java Program to remove all the white spaces from a string
• Java Program to replace lower-case characters with upper-case and vice-versa
• Java Program to replace the spaces of a string with a specific character
• Java Program to determine whether a given string is palindrome
• Java Program to determine whether one string is a rotation of another
• Java Program to find maximum and minimum occurring character in a string
• Java Program to find Reverse of the string
• Java program to find the duplicate characters in a string
• Java program to find the duplicate words in a string
• Java Program to find the frequency of characters
• Java Program to find the largest and smallest word in a string
• Java Program to find the most repeated word in a text file
• Java Program to find the number of the words in the given text file
• Java Program to separate the Individual Characters from a String
• Java Program to swap two string variables without using third or temp variable.
• Java Program to print smallest and biggest possible palindrome word in a given string
• Reverse String in Java Word by Word
• Reserve String without reverse() function
• Linear Search in Java
• Binary Search in Java
• Bubble Sort in Java
• Selection Sort in Java
• Insertion Sort in Java
• How to convert String to int in Java
• How to convert int to String in Java
• How to convert String to long in Java
• How to convert long to String in Java
• How to convert String to float in Java
• How to convert float to String in Java
• How to convert String to double in Java
• How to convert double to String in Java
• How to convert String to Date in Java
• How to convert Date to String in Java
• How to convert String to char in Java
• How to convert char to String in Java
• How to convert String to Object in Java
• How to convert Object to String in Java
• How to convert int to long in Java
• How to convert long to int in Java
• How to convert int to double in Java
• How to convert double to int in Java
• How to convert char to int in Java
• How to convert int to char in Java
• How to convert String to boolean in Java
• How to convert boolean to String in Java
• How to convert Date to Timestamp in Java
• How to convert Timestamp to Date in Java
• How to convert Binary to Decimal in Java
• How to convert Decimal to Binary in Java
• How to convert Hex to Decimal in Java
• How to convert Decimal to Hex in Java
• How to convert Octal to Decimal in Java
• How to convert Decimal to Octal in Java
• Java program to print the following spiral pattern on the console
• Java program to print the following pattern
• Java program to print the following pattern 2
• Java program to print the following pattern 3
• Java program to print the following pattern 4
• Java program to print the following pattern 5
• Java program to print the following pattern on the console
• Java program to print the following pattern on the console 2
• Java program to print the following pattern on the console 3
• Java program to print the following pattern on the console 4
• Java program to print the following pattern on the console 5
• Java program to print the following pattern on the console 6
• Java program to print the following pattern on the console 7
• Java program to print the following pattern on the console 8
• Java program to print the following pattern on the console 9
• Java program to print the following pattern on the console 10
• Java program to print the following pattern on the console 11
• Java program to print the following pattern on the console 12
• Singly linked list Examples in Java
• Java Program to create and display a singly linked list
• Java program to create a singly linked list of n nodes and count the number of nodes
• Java program to create a singly linked list of n nodes and display it in reverse order
• Java program to delete a node from the beginning of the singly linked list
• Java program to delete a node from the middle of the singly linked list
• Java program to delete a node from the end of the singly linked list
• Java program to determine whether a singly linked list is the palindrome
• Java program to find the maximum and minimum value node from a linked list
• Java Program to insert a new node at the middle of the singly linked list
• Java program to insert a new node at the beginning of the singly linked list
• Java program to insert a new node at the end of the singly linked list
• Java program to remove duplicate elements from a singly linked list
• Java Program to search an element in a singly linked list
• Java program to create and display a Circular Linked List
• Java program to create a Circular Linked List of N nodes and count the number of nodes
• Java program to create a Circular Linked List of n nodes and display it in reverse order
• Java program to delete a node from the beginning of the Circular Linked List
• Java program to delete a node from the end of the Circular Linked List
• Java program to delete a node from the middle of the Circular Linked List
• Java program to find the maximum and minimum value node from a circular linked list
• Java program to insert a new node at the beginning of the Circular Linked List
• Java program to insert a new node at the end of the Circular Linked List
• Java program to insert a new node at the middle of the Circular Linked List
• Java program to remove duplicate elements from a Circular Linked List
• Java program to search an element in a Circular Linked List
• Java program to sort the elements of the Circular Linked List
• Java program to convert a given binary tree to doubly linked list
• Java program to create a doubly linked list from a ternary tree
• Java program to create a doubly linked list of n nodes and count the number of nodes
• Java program to create a doubly linked list of n nodes and display it in reverse order
• Java program to create and display a doubly linked list
• Java program to delete a new node from the beginning of the doubly linked list
• Java program to delete a new node from the end of the doubly linked list
• Java program to delete a new node from the middle of the doubly linked list
• Java program to find the maximum and minimum value node from a doubly linked list
• Java program to insert a new node at the beginning of the Doubly Linked list
• Java program to insert a new node at the end of the Doubly Linked List
• Java program to insert a new node at the middle of the Doubly Linked List
• Java program to remove duplicate elements from a Doubly Linked List
• Java program to rotate doubly linked list by N nodes
• Java program to search an element in a doubly linked list
• Java program to sort the elements of the doubly linked list
• Java Program to calculate the Difference between the Sum of the Odd Level and the Even Level Nodes of a Binary Tree
• Java program to construct a Binary Search Tree and perform deletion and In-order traversal
• Java program to convert Binary Tree to Binary Search Tree
• Java program to determine whether all leaves are at same level
• Java program to determine whether two trees are identical
• Java program to find maximum width of a binary tree
• Java program to find the largest element in a Binary Tree
• Java program to find the maximum depth or height of a tree
• Java program to find the nodes which are at the maximum distance in a Binary Tree
• Java program to find the smallest element in a tree
• Java program to find the sum of all the nodes of a binary tree
• Java program to find the total number of possible Binary Search Trees with N keys
• Java program to implement Binary Tree using the Linked List
• Java program to search a node in a Binary Tree
• Java Main Method
• System.out.println()
• Java Memory Management
• Java ClassLoader
• Java Decompiler
• Java vs. JavaScript
• Java vs. Kotlin
• Java vs. Python
• Java Absolute Value
• How to Create File
• Delete a File in Java
• Open a File in Java
• Sort a List in Java
• Convert byte Array to String
• Java Basics
• How to Compile & Run Java Program
• How to Run Java Program in Eclipse
• How to Verify Java Version
• Ways to Create an Object in Java
• How to Run a Java program in Windows 10
• Runnable Interface in Java
• Java Keystore
• Get input from user in Java
• Read file line by line in Java
• Take String input in Java
• How to Read Excel File in Java
• Read XML File in Java
• CompletableFuture in Java
• Java ExecutorService
• How to iterate Map in Java
• How to Return an Array in Java
• How to Sort HashMap by Value
• How to Sort HashMap in Java
• Load Factor in HashMap
• Array vs ArrayList
• HashMap vs TreeMap
• HashSet vs HashMap class
• Compare Two ArrayList in Java
• Merge Two Arrays in Java
• Print Array in Java
• Read CSV File in Java
• Remove Special Characters from String
• ArrayIndexOutOfBoundsException
• ConcurrentModificationException
• NoSuchElementException
• NumberFormatException
• How to Sort ArrayList in Java
• How to Download Java
• How to Call a Method in Java
• How to Create Singleton Class in Java
• How to Find Array Length in Java
• How to Read Character in Java
• Can We Overload main() Method in Java
• How to Convert Char Array to String in Java
• How to Run Java Program in CMD Using Notepad
• How to Sort String Array in Java
• How to Compare Dates in Java
• How to Take Multiple String Input in Java Using Scanner
• How to Remove Last Character from String in Java
• How TreeMap Works Internally in Java
• Java Program to Break Integer into Digits
• Java Program to Calculate Area and Circumference of Circle
• What is Diamond Problem in Java
• Java Program to Read Number from Standard Input
• How to Download Minecraft Java Edition
• Can We Override Static Method in Java
• How to Avoid Deadlock in Java
• How to Achieve Abstraction in Java
• How Garbage Collection Works in Java
• How to Take Array Input in Java
• How to Create Array of Objects in Java
• How to Create Package in Java
• How to Print in Java
• What is Framework in Java
• Why Java is Secure
• How to Iterate List in Java
• How to Use Eclipse for Java
• Which Package is Imported by Default in Java
• Could Not Find or Load Main Class in Java
• How to Compare Two Arrays in Java
• How to Convert String to JSON Object in Java
• Which is Better Java or Python
• How to Update Java
• How to Get Value from JSON Object in Java Example
• How to Split a String in Java with Delimiter
• Structure of Java Program
• Why We Use Constructor in Java
• Java Create Excel File
• Java Interpreter
• javac is not Recognized
• Dynamic Array in Java
• Shunting yard algorithm
• Java Destructor
• Custom ArrayList in Java
• ArrayList vs HashMap
• Java Constant
• Java Tokens
• How to Enable Java in Chrome
• Java Semaphore
• Array to List in Java
• JIT in Java
• How to Clear Screen in Java
• Java Logger
• Reverse a String Using Recursion in Java
• Java Path Vs File
• Float Vs Double Java
• Stack vs Heap Java
• Abstraction vs Encapsulation
• Top 10 Java Books
• Public vs Private
• What is Java Used For
• Bitwise Operator in Java
• SOLID Principles Java
• Type Casting in Java
• Conditional Operator in Java
• Ternary Operator Java
• Java Architecture
• REPL in Java
• Types of Exception in Java
• Why String is Immutable or Final in Java
• Java vs Kotlin
• Set in Java
• Why non-static variable cannot be referenced from a static context in Java
• Java Developer Roles and Responsibilities
• Types of Classes in Java
• Marker Interface in Java
• Static Function in Java
• Unary Operators in Java
• What is Advance Java
• ArrayList Implementation
• Convert ArrayList to String Array
• Hashmap vs ConcurrentHashMap
• List vs ArrayList
• Map vs HashMap
• HashSet vs LinkedHashSet
• How TreeSet Works Internally
• LinkedHashMap vs HashMap
• Java Program to Solve Quadratic Equation
• Scope Resolution Operator in Java
• Composition in Java
• File Operations in Java
• NoClassDefFoundError in Java
• Thread Concept in Java
• Upcasting and Downcasting in Java
• Dynamic Polymorphism in Java
• String Pool in Java
• What is constructor chaining in Java
• Add elements to Array in Java
• Advantages and disadvantages of Java
• Advantages of JavaBeans
• AWS SDK for Java with Apache Maven
• AWT and Swing in Java
• AWT Program in Java
• Boolean values in Java
• ByteStream Classes in Java
• CharacterStream Classes in Java
• Class and Interface in Java
• ClassCast Exception in Java
• Cloneable in Java
• Constructor overloading in Java
• Control Flow in Java
• Convert Java Object to Json using GSON
• Convert XML to JSON in Java
• How to avoid null pointer exception in Java
• Java constructor returns a value, but what
• Singleton Class in Java
• Doubly Linked List Program in Java
• Association in Java
• Big data Java vs Python
• Branching Statements in Java
• Collections Sort in Java 8
• List vs Set in Java
• How many days required to learn Java
• Implicitly Typecasting in Java
• Legacy Class in Java
• Character Array in Java
• Equals() and Hashcode() in Java
• Externalization in Java
• Identifiers in Java
• InvocationTargetException
• Java Pass by Value
• Mutable and Immutable in Java
• Power Function in Java
• Primitive Data Types in Java
• String Array in Java
• Virtual Function in Java
• C vs C++ vs Java
• Java String Max Size
• Convert Java object to JSON
• How to Calculate Date Difference in Java
• How to Improve Coding Skills in Java
• Java Email Validation
• Java Testing Tools
• Permutation and Combination in Java
• Unique Number in Java Program
• Java Code for DES
• Pig Latin Program in Java
• Array Rotation in Java
• Equilibrium Index of an Array in Java
• Different Ways to Print Exception Message in Java
• Java Copy Constructor Example
• Why We Use Static Class in Java
• What is Core Java
• Set vs Map in Java
• How to Create a New Folder in Java
• Remove an Element from ArrayList in Java
• How to Create Test Cases for Exceptions in Java
• How to Convert JSON Array to ArrayList in Java
• How to Create a Class File in Java
• Java Spring Pros & Cons
• Java Stack Trace
• Array Slicing in Java
• Flutter vs Java
• Permutation of Numbers in Java
• Magic Number in Java
• Reference Data Types in Java
• Counter variable in Java
• How to take Character Input in Java using BufferedReader Class
• Java employee details program
• Java is case sensitive explain
• Ramanujan Number or Taxicab Number in Java
• Advanced Java Books in 2021
• Fail Fast and Fail Safe Iterator in Java
• How to build a Web Application Using Java
• Is Java Interpreted or Compiled
• Java Big Data Frameworks
• Java Get Data From URL
• No Main Manifest Attribute
• Java missing return statement
• Java program to remove duplicate characters from a string
• JUnit test case example in Java
• List of logical programs in Java
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• 7th Sep - Array Declaration in Java
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• 7th Sep - Introduction To Java
• 7th Sep - Java Lambda foreach
• 7th Sep - Java Latest Version
• 7th Sep - Java Method Signature
• 7th Sep - Java Practice Programs
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• 7th Sep - java.util.concurrent.RecursiveAction class in Java With Examples
• 7th Sep - Largest Palindrome by Changing at Most K-digits in Java
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• Array Programs in Java
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• Different Ways to Convert java.util.Date to java.time.LocalDate in Java
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In , assignment is used to assign values to a variable. In this section, we will discuss the . The is the combination of more than one operator. It includes an assignment operator and arithmetic operator or bitwise operator. The specified operation is performed between the right operand and the left operand and the resultant assigned to the left operand. Generally, these operators are used to assign results in shorter syntax forms. In short, the compound assignment operator can be used in place of an assignment operator. For example: Let's write the above statements using the compound assignment operator. Using both assignment operators generates the same result. Java supports the following assignment operators: Catagories Operator Description Example Equivalent Expression It assigns the result of the addition. count += 1 count = count + 1 It assigns the result of the subtraction. count -= 2 count = count - 2 It assigns the result of the multiplication. price *= quantity price = price * quantity It assigns the result of the division. average /= number_of_terms average = number_of_terms It assigns the result of the remainder of the division. s %= 1000 s = s % 1000 It assigns the result of the signed left bit shift. res <<= num res = res << num It assigns the result of the signed right bit shift. y >>= 1 y = y >> 1 It assigns the result of the logical AND. x &= 2 x = x & 2 It assigns the result of the logical XOR. a ^= b a = a ^ b It assigns the result of the logical OR. flag |= true flag = flag | true It assigns the result of the unsigned right bit shift. p >>>= 4 p = p >>> 4 Using Compound Assignment Operator in a Java Program CompoundAssignmentOperator.java Latest Courses We provides tutorials and interview questions of all technology like java tutorial, android, java frameworks Contact info G-13, 2nd Floor, Sec-3, Noida, UP, 201301, India [email protected] . Interview Questions Online compiler. Switch Case vs. If-Else in JavaScript Explained Switch case and if-else offer two different approaches to writing conditional statements in JavaScript. Here’s how to determine which one to use. In JavaScript , the switch case and if-else statement provide two different ways to write a conditional statement .  The switch case is used to test the value of the given variable against a list of case values to determine which code block to run. The if-else statement nests conditions under if and else statements that determine which code to execute. It can be difficult to determine which one to use. Switch Case vs. If-Else Statements in JavaScript Explained Switch case: Switch case allows conditions to be separated into different case blocks. The expression inside the switch statement decides what to execute.    If-else statements: If-else statements nest conditions under if and else statements. The condition in the if statement determines whether to execute code under the if block or the else block.   However, a switch statement is usually more efficient than a set of nested ifs. When you have to choose which one to use, it’s best to decide based on readability and the expression that the statement is testing. Differences Between Switch Case vs. If-Else  The expression inside of an if statement decides whether to execute the statements inside the if block or the else block. For switch, the expression inside the switch statement decides which case to execute. The if-else statement checks for equality as well as for logical expression. On the other hand, switch checks only for equality. The if statement evaluates integer, character, pointer or floating-point type or boolean type. The switch statement evaluates only character or an integer datatype. In if-else statements, the if statement determines whether the statement under the if block will execute or the statement under else block statement will execute. However, the expression in the switch statement decides which case to execute, however, if you don’t apply a break statement after each case , it will execute until the end of switch statement. For an if-else statement, if the expression inside of the if turns out to be false, the statement inside of the else block will be executed. For the switch statement, if the expression inside of the switch statement turns out to be false, then the default statements are executed. It can be difficult to edit if-else statements since it’s tedious to trace where the correction is required. Many people agree that it’s much simpler to edit switch statements since they’re easy to trace. More on Software Engineering JavaScript Check If a Checkbox Is Checked Switch Case vs. If-Else Syntax This is the general syntax of an if-else statement: And this is the general syntax for switch: The if-else ladder is of type strict condition check, while switch is of type jump value catching. More on Software Engineering Guide to the JavaScript Array Filter() Method Advantages of Switch Case vs. If-Else  A switch statement works much faster than the equivalent if-else ladder because the compiler generates a jump table for a switch during compilation. During execution, instead of checking which case is satisfied, it only decides which case has to be executed. A switch case statement is more readable compared to if-else statements. In the end, the choice is yours and I hope this blog helps lead you in the right path to making the most informed decision when to use an if-else statement verses a switch case! Frequently Asked Questions Is switch better than if-else in javascript . Switch case is considered faster and more readable than nested if-else statements. If-else statements require the compiler to check each statement to determine if a condition is met. Switch case is more efficient because it allows the compiler to determine only which case has to be executed.  What is the key difference between switch case vs. if-else statements in JavaScript? If-else statements involving branching conditions under if and else statements. The code executes the if statement if a given condition is met, otherwise it executes the else statement. Here’s how the syntax looks: In switch case , the expression in the switch statement decides which case to execute along with a break statement after each case. This allows the compiler to execute only the code in which the case condition is met, making it a more streamlined version of if-else. The syntax looks like this: Recent Software Engineering Perspectives Articles Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand OverflowAI GenAI features for Teams OverflowAPI Train & fine-tune LLMs Labs The future of collective knowledge sharing About the company Visit the blog Collectives™ on Stack Overflow Find centralized, trusted content and collaborate around the technologies you use most. Q&A for work Connect and share knowledge within a single location that is structured and easy to search. Get early access and see previews of new features. assign and execute if/else conditions in single line How can I do that for example, if block checks if the condition is true or false and then execute action depends on that condition? Something like that do it all in the same line without blocks , it that possible ? Sorry for my bad English if-statement ternary-operator 1 Why wihout blocks? It's mere syntax. Any reason? –  m0skit0 Commented Jan 30, 2015 at 12:36 1 People downvoting new users without even bothering to comment makes me sad. –  André Laszlo Commented Jan 30, 2015 at 12:55 7 Answers 7 You can use java ternary operator , this statement can be read as, If testCondition is true, assign the value of value1 to result ; otherwise, assign the value of value2 to result . simple example would be, In above code, if the variable a is less than b , minVal is assigned the value of a ; otherwise, minVal is assigned the value of b . here is another example using String , this examples would clear it more. It prints the salutation properly for a person's gender: Question: you cannot call a method inside ternary operator. No, this is incorrect. You can call a method inside a ternary operator as long as it returns a value which is of the same type as the left-side of a ternary operator, consider this example, let's create a method that returns a String value, Now see this code, this will execute just fine because return type of message() and variable type of answer are the same, i.e String . Thx, for the examples now i get it! So if(true) ? trueaction; : falseaction; would work no ? –  peti446 Commented Jan 30, 2015 at 12:55 (true or false) ? (execute this if true) : (execute this if false) –  Sufiyan Ghori Commented Jan 30, 2015 at 13:52 i mean if i can call a method there like for example (true)?System.out.println("true") : System.out.println("false") but i see that @neeraj-jain say that ternary operation cannot execute methods, but thx for all! –  peti446 Commented Jan 30, 2015 at 13:57 in your given condition, i.e (true)?System.out.println("true") : System.out.println("false") what would be the left side of your statement ?, you can do this instead, System.out.print(false ? "true" : "false"); –  Sufiyan Ghori Commented Jan 30, 2015 at 14:14 Ok, thanks for all! the left side would be a check for ecample 'if(myNumber == 1) ? callTrueMethod; : callFalseMethod;' The method can be for example a void. –  peti446 Commented Jan 30, 2015 at 14:22 Is logically identical to For putting a conditional statement on one line, you could use the ternary operator. Note, however, that this can only be used in assignments , i.e. if the functions actually return something and you want to assign that value to a variable. If you want to execute methods, that do not return anything, but have some other side-effects, the ternary operator is not the right way to go. In fact, it does not even compile! Instead, you should just use a plain-old if-then-else . It's also easier to read. You can not use Ternary Operator as you can not invoke any void method (i.e. the method which do not return anything ) from Ternary Operator As it is not the intended use of the ternary operator . If you really want it to be achieved in 1 line, you can write: Maybe the ternary operator does what you want: You can use a trenary operator: which I guess pretty much does what you want. If you really, really need a one-liner you could use this syntax (Known as ternary operator) : 1>0 ? "do action" : " Do other action"; An example would be this: String result = x>y ? "x>y" : "y>x"; But this is not recommended, most people hate this syntax because it can become very unreadable if you cascade several conditions inside it, or even worst cascade ternary operators. But it has it's uses. Your Answer Reminder: Answers generated by artificial intelligence tools are not allowed on Stack Overflow. Learn more Sign up or log in Post as a guest. Required, but never shown By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy . Not the answer you're looking for? Browse other questions tagged java if-statement ternary-operator or ask your own question . The Overflow Blog One of the best ways to get value for AI coding tools: generating tests The world’s largest open-source business has plans for enhancing LLMs Featured on Meta User activation: Learnings and opportunities Site maintenance - Mon, Sept 16 2024, 21:00 UTC to Tue, Sept 17 2024, 2:00... 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Expressions and Assignment Statements PPT LESSON 5 Java Assignment operators VIDEO #20. Assignment Operators in Java Core JAVA TUTORIAL Java Programming Tutorials Java Tutorial # 7 java101 COMMENTS Java Assignment Operators with Examples Note: The compound assignment operator in Java performs implicit type casting. Let's consider a scenario where x is an int variable with a value of 5. int x = 5; If you want to add the double value 4.5 to the integer variable x and print its value, there are two methods to achieve this: Method 1: x = x + 4.5. Method 2: x += 4.5. 1.7 Java An assignment statement designates a value for a variable. An assignment statement can be used as an expression in Java. After a variable is declared, you can assign a value to it by using an assignment statement. In Java, the equal sign = is used as the assignment operator. The syntax for assignment statements is as follows: variable ... 1.4. Expressions and Assignment Statements In this lesson, you will learn about assignment statements and expressions that contain math operators and variables. 1.4.1. Assignment Statements ¶. Remember that a variable holds a value that can change or vary. Assignment statements initialize or change the value stored in a variable using the assignment operator =. Assignment, Arithmetic, and Unary Operators (The Java™ Tutorials The Java Tutorials have been written for JDK 8. Examples and practices described in this page don't take advantage of improvements introduced in later releases and might use technology no longer available. See Java Language Changes for a summary of updated language features in Java SE 9 and subsequent releases. All Java Assignment Operators (Explained With Examples) Java Conditional Statements: if, if-else, nested if, ladder, switch; Nested Loop in Java (Nested for, while, do-while loops) for-each Loop in Java (Syntax, Examples, Flowchart) Java Continue Statement: Use, Examples, Jump Statements; All Java Assignment Operators (Explained With Examples) Java Break Statement: Uses, Syntax, Examples, Label Break Java Example. =. Simple assignment operator. Assigns values from right side operands to left side operand. C = A + B will assign value of A + B into C. +=. Add AND assignment operator. It adds right operand to the left operand and assign the result to left operand. C += A is equivalent to C = C + A. Types of Assignment Operators in Java To assign a value to a variable, use the basic assignment operator (=). It is the most fundamental assignment operator in Java. It assigns the value on the right side of the operator to the variable on the left side. Example: int x = 10; int x = 10; In the above example, the variable x is assigned the value 10. Assignment Operator in Java with Example The = operator in java is known as assignment or simple assignment operator. It assigns the value on its right side to the operand (variable) on its left side. For example : a = 20; // variable a is reassigned with value 20. The left-hand side of an assignment operator must be a variable while the right side of it should be a value which can be ... Assignment Operators in Java with Examples Assignment Operator in Java. The following assignment operators are supported in Java. ... As you can see, In the above example, we are using assignment operator in if statement. We did a comparison of value 10 to an assignment operator which resulted in a 'true' output because the return of assignment operator is the value of left operand. Java Assignment Operators Java Assignment Operators. The Java Assignment Operators are used when you want to assign a value to the expression. The assignment operator denoted by the single equal sign =. In a Java assignment statement, any expression can be on the right side and the left side must be a variable name. For example, this does not mean that "a" is equal to ... Java Assignment Operators Compound Assignment Operators. Sometime we need to modify the same variable value and reassigned it to a same reference variable. Java allows you to combine assignment and addition operators using a shorthand operator. For example, the preceding statement can be written as: i +=8; //This is same as i = i+8; The += is called the addition ... 1. How to execute the assignment statement Questions 2 and 3 ask about the if-statement and if-else statement. These are the same as in just about any programming language, except for the syntax, of course. So use your knowledge of these statements in whatever programming language you know. 1. Write the algorithm for executing the Java assignment statement <variable>= <expression>; 2. Expressions, Statements, and Blocks (The Java™ Tutorials The data type of the value returned by an expression depends on the elements used in the expression. The expression cadence = 0 returns an int because the assignment operator returns a value of the same data type as its left-hand operand; in this case, cadence is an int.As you can see from the other expressions, an expression can return other types of values as well, such as boolean or String. What Is an Assignment Statement in Java? The assignment statement in Java involves using the assignment operator to set the value of a variable. The exact syntax depends on the type of variable receiving a value. Advertisement Variables Video of the Day In Java, variables are strongly typed. This means that when you declare a variable in a Java program, you must declare its type ... What does an assignment expression evaluate to in Java? The assignment operator in Java evaluates to the assigned value (like it does in, e.g., c). So here, readLine() will be executed, and its return value stored in line. That stored value is then checked against null, and if it's null then the loop will terminate. edited Jun 3, 2021 at 14:55. Michael. Compound assignment operators in Java Compound-assignment operators provide a shorter syntax for assigning the result of an arithmetic or bitwise operator. They perform the operation on the two operands before assigning the result to the first operand. The following are all possible assignment operator in java: 1. += (compound addition assignment operator) 2. Java Operators Java Comparison Operators. Comparison operators are used to compare two values (or variables). This is important in programming, because it helps us to find answers and make decisions. The return value of a comparison is either true or false. These values are known as Boolean values, and you will learn more about them in the Booleans and If ... Java Operators: Arithmetic, Relational, Logical and more 2. Java Assignment Operators. Assignment operators are used in Java to assign values to variables. For example, int age; age = 5; Here, = is the assignment operator. It assigns the value on its right to the variable on its left. That is, 5 is assigned to the variable age. Let's see some more assignment operators available in Java. Compound Assignment Operator in Java Compound Assignment Operator. The compound assignment operator is the combination of more than one operator. It includes an assignment operator and arithmetic operator or bitwise operator. The specified operation is performed between the right operand and the left operand and the resultant assigned to the left operand. Assigning in Java? In Java, your variables can be split into two categories: Objects, and everything else (int, long, byte, etc). A primitive type (int, long, etc), holds whatever value you assign it. An object variable, by contrast, holds a reference to an object somewhere. So if you assign one object variable to another, you have copied the reference, both A ... Switch Case vs. If-Else in JavaScript Explained Switch case: Switch case allows conditions to be separated into different case blocks. The expression inside the switch statement decides what to execute. If-else statements: If-else statements nest conditions under if and else statements. The condition in the if statement determines whether to execute code under the if block or the else block. java 15. You can use java ternary operator, this statement can be read as, If testCondition is true, assign the value of value1 to result; otherwise, assign the value of value2 to result. simple example would be, In above code, if the variable a is less than b, minVal is assigned the value of a; otherwise, minVal is assigned the value of b. assignment essay homework paper phd report review speech thesis