Java Logical Operators

Logical operators are generally used with Boolean values and after operation they also return a Boolean value. Sometimes these operators are used with non-Boolean values then they return non-Boolean values.

These operators show the control program flow. Let's take two Boolean values "a" and "b", here "a" holds TRUE and "b" holds FALSE.


A list of logical operators in Java language:

S.No. Operators Example Description
1. && (Logical AND) (a && b) is False It is called logical AND operator. It specifies TRUE, if both the operands are non-zero.
2. || (Logical OR) (a || b) is TRUE It is called logical OR operator. It specifies TRUE, if any of the two operands are non-zero.
3. ! (Logical NOT) !(a && b) is TRUE It is called logical NOT operator. It is used to reverses the logical state of its operand. If a condition is true then logical NOT operator will make it FALSE.

logical Operators Example

The following program is a simple example that demonstrates the logical operators.


 /**
 * 
 * @author JavaTportal Corporation
 *
 */
public class LogicalOperatorsExample {

		public static void main(String args[]) {
		boolean a = true;
		boolean b = false;

		System.out.println("a && b = " + (a && b));
		System.out.println("a || b = " + (a || b));
		System.out.println("!(a && b) = " + !(a && b));
	}
}

Output

a && b = false
a || b = true
!(a && b) = true


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