Logical Operators in Java

Logical operators are used to make logical decisions. Logical operators are mainly used in conditional statements and loops to make logical decisions.

Logical Operators in Java

There are three kinds of logical operators.

Operator Name	Operator	Example
Logical AND	&&	x && y
Logical OR	||	x || y
Logical NOT	!	!x

Logical AND Operator

Logical AND operator is used to perform AND operators as shown in the below table

X	Y	OUTPUT
TRUE	TRUE	TRUE
TRUE	FALSE	FALSE
FALSE	TRUE	FALSE
FALSE	FALSE	FALSE

package com.yawintutor;

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

		c = a && b;

		System.out.println("a value is " + a);
		System.out.println("b value is " + b);
		System.out.println("\n(a && b) is " + c);

	}
}

Output

a value is true
b value is false

(a && b) is false

Logical OR Operator

Logical OR operator is used to perform OR operators as shown in the below table

X	Y	OUTPUT
TRUE	TRUE	TRUE
TRUE	FALSE	TRUE
FALSE	TRUE	TRUE
FALSE	FALSE	FALSE

package com.yawintutor;

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

		c = a || b;

		System.out.println("a value is " + a);
		System.out.println("b value is " + b);
		System.out.println("\n(a || b) is " + c);

	}
}

Output

a value is true
b value is false

(a || b) is true

Logical NOT operator

Logical NOT operator is used to perform NOT operators as shown in the below table

X	OUTPUT
TRUE	FALSE
FALSE	TRUE

package com.yawintutor;

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

		b = !a;
		

		System.out.println("a value is " + a);
		System.out.println("\n( !a )  is " + b);

	}
}

Output

a value is true

( !a )  is false