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Home » Java » Operators » Logical Operators in Java Examples
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Logical Operators in Java Examples

By Dinesh Thakur

Logical operators are used to combine one or more relational expressions that results in formation of complex expressions known as logical expressions. Like relational operators, the logical operators evaluate the result of logical expression in terms of Boolean values that can only be true or false according to the result of the logical expression.

In Java, there are six logical operators: logical AND (&), logical OR (|), logical exclusive

OR i.e. XOR (^), logical negation (!), conditional AND (&&), conditional OR  (||). All the logical operators are binary operators except logical negation which is a unary operator. The logical AND (&) operator evaluates to true if and only if both its operands evaluates to true. The logical OR (I) operator evaluates to true if and only if either of its operands evaluate true. The logical exclusive OR i.e. XOR (^) operator evaluates to true if and only if either, but not both, of its operands are true. In other words, it evaluates to false if both the operands are false.

The logical NOT(!) operator takes a single operand and evaluates to true if the operand is false and evaluates to false if the operand is true.

 

Table shows you the different Logical Operators used in Java Programming

 

                                                             Logical Operators

 

Operators

Meaning

&&

||

!

Logical AND

                                    Logical OR

Logical NOT

 

The logical operators && and || are used when we want to form compound conditions by combining two or more relations. Logical operators return results indicated in the following table.

 

x

Y

X && Y

X || Y

T

T

F

F

T

F

T

T

T

F

F

F

T

T

T

F

 

//program Showing Logical Operations
public class LogicalOperators
{
    public static void main (String [] args)
    {
       int x=6 ,y=4,z=5;
       System.out.println(" x>y & y>z-->" + (x>y & y>z));
       System.out.println(" x>y | y>z-->" + (x>y | y>z));
       System.out.println(" x>y ^  y>z-->" +(x>y  ^ y>z));
       System.out.println(" x>y && y>z-->"  +  (x>y&& y>z));
       System.out.println(" x>y || y>z-->"  +  (x>y||y>z));
       System.out.println(" !(x>y)--> " + (!(x>y)));  
    }
    
}

Logical Operators in Java Examples

Java Example to implement Logical Operators using Scanner Class. 
import java.util.*;
import java.lang.*;
class LogicalOperatorsUsingScanner
{
              public static void main(String args[])
         {
                  int x,y,z;
                  Scanner scan = new Scanner(System.in);
                  System.out.print("Enter the Value of x : ");
                  x=scan.nextInt();
                  System.out.print("Enter the Value of y : ");
                  y=scan.nextInt();
                  System.out.print("Enter the Value of z : ");
                  z=scan.nextInt();
                  System.out.println("x>y and x>z : "+((x>y) &&(x>z)));
                  System.out.println("x not equal to z : "+(x!=z));
          }
}

Java Example to implement Logical Operators using Scanner Class

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  4. Explain purpose of relational operators and logical operator
  5. Write C++ program illustrates the hierarchy rule in a Boolean expression involving arithmetic, relational and logical operators
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About Dinesh Thakur
Dinesh ThakurDinesh Thakur holds an B.C.A, MCDBA, MCSD certifications. Dinesh authors the hugely popular Computer Notes blog. Where he writes how-to guides around Computer fundamental , computer software, Computer programming, and web apps.

Dinesh Thakur is a Freelance Writer who helps different clients from all over the globe. Dinesh has written over 500+ blogs, 30+ eBooks, and 10000+ Posts for all types of clients.


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