Logical Operators in Java with Example

Logical Operators in Java with Example | Java Logical Operators With Sample Program

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Searching for well-organized and detailed explanation tutorials on Java Operators or other Java concepts? BTech Geeks is the perfect one-stop destination for you all beginners & also experienced programmers. Today, in this java tutorial, we are providing complete information about Logical Operators in Java with Examples. Also, you will learn the types of java logical operators with the help of prevailing tables & examples.

This Java Logical Operators Tutorial Contains:

Java Operators

Operators are special symbols that perform specific operations on one, two, or three operands, and then return a result. There are different types of operators are available in java which are given below:

  1. Arithmetic Operators
  2. Unary Operators
  3. Assignment Operators
  4. Relational Operators
  5. Logical Operators
  6. BitWise Operators
  7. Ternary Operators
  8. InstanceOf Operators

Java Logical Operators

Logical Operators in Java works on boolean operands. It is also known as Boolean Logical Operators. It operates on two boolean values, which return boolean values(true/false) as a result. There are basically three types of logical operators used in Java.

Operator Example Meaning
&& (Logical AND) expression1 && expression2 true only if both expression1 and expression2 are true
|| (Logical OR) expression1 || expression2 true if either expression1 or expression2 is true
! (Logical NOT) !expression true if expression is false and vice versa

The below image represents what are the possible values of A && B, A || B, and !A, if you assume two operands A and B:

Logical Operators in Java with Example 1

Do Refer:

&& (Logical AND) Operator

This operator returns true if both conditions are true. If we have taken two conditions A and B then the possible values of A && B are shown in the below table:

A B A && B
True True True
False True False
True False False
False False False

|| (Logical OR) Operator

The logical || operator allows two operands. This operator returns true if at least one condition is true. Assume we have two conditions A and B. Now, check the possible values of A || B in the below-resulting table.

A B A || B
True True True
False True True
True False True
False False False

! (Logical Not Operator)

This operator reverses the value of the operand. If the value is true, then it returns false, and if it is false, then it returns true. An exclamation sign (!) is the representation of this logical operator. It accepts a single operand ie., A. Then it returns the opposite possible Value of A.

A !A
True False
False True

Example of Logical Operators in Java

class LogicalOperator {
public static void main(String[] args) {
//Variables Definition and Initialization
boolean b1 = true, b2 = false;

//Logical AND Operation
System.out.println("b1 && b2 --> " + (b1 && b2));

//Logical OR Operation
System.out.println("b1 || b2 --> " + (b1 || b2) );

//Logical Not Operation
System.out.println("!(b1 && b2) --> " + !(b1 && b2));

}
}

Output:

Logical Operators in Java with Example 2