Logical Operators in Java

☞Following are the types of logical operators in java.

&&       ➺    Logical AND
||       ➺    Logical OR
!        ➺    Logical NOT

☞!(Logical NOT) is an unary operator.

☞&&(Logical AND) and ||(Logical OR) are binary operators.

☞Precedence of logical operators. See the table to understand it properly.

!    ➺    unary operator
&&   ➺    binary operators
||   ➺    binary operators

☞Priority of Logical NOT (!) operator is not only just higher than the remaining two logical operator but higher than all other operators too, as it is also a unary operator.

☞Priority of logical AND (&&) is higher than logical OR (||).

Logical NOT (!)

☞It reverses the result. If experssion is True, then it will convert it into False and vice-versa.

exp1 !exp1
!false true
!true false

Example 

public class LogicalNotExample {
    public static void main(String[] args) {
        
        int x=5;
        boolean y=!(x>4);
        System.out.println(y);
    
    }
}

Output

false

Logical AND (&&)

☞If both the expressions will be true, then result will be true.

exp1 exp2 exp1 && exp2
false false false
false true false
true false false
true true true

Example 

public class LogicalAndExample {
    public static void main(String[] args) {
        
        int x=5;
        boolean y=x>4 && x<10;
        System.out.println(y);
    
    }
}

Output

true

Logical OR (||)

☞If any expression will be true, then result will be true.

exp1 exp2 exp1 || exp2
false false false
false true true
true false true
true true true

Example

public class LogicalOrExample {
    public static void main(String[] args) {
        
        int x=5;
        boolean y=x>4 || x<10;
        System.out.println(y);
    
    }
}

Output

true