Java Boolean booleanValue() method

The booleanValue() method of Java Boolean class returns a Boolean value for the specified Boolean argument.

Syntax

public Boolean booleanValue()

Parameters

NA

Return Value

This method returns the primitive value of specified Boolean object.

Example 1

public class JavaBooleanBooleanValueExample1 {
    static int i=1;
    public static void main(String[] args) {
        // create a boolean object
        Boolean b1 = new Boolean(true);
        //returns a Boolean value for the specified Boolean arguments
        Boolean b2= b1.booleanValue();
        System.out.println(i + ". Boolean value of "+b1 +" : "+b2);
        Boolean b3 = false;
        //assigning boolean value of b3 to b4
        boolean b4 = b3.booleanValue();
        System.out.println(i++ +". Boolean value for "+b3+" : "+b4);
    }
}

Output

1. Boolean value of true : true
2. Boolean value for false : false

Example2:

import java.util.Scanner;
public class JavaBooleanBooleanValueExample2 {
     public static void main(String[] args) {
        Scanner scanner=new Scanner(System.in);
         System.out.println("Enter your name and age");
         System.out.print("Name1 : ");String str1 =scanner.next();
         System.out.print("Age1 :"); int age1=scanner.nextInt();
         System.out.println();
         System.out.print("Name2 : ");String str2 =scanner.next();
         System.out.print("Age2 :"); int age2=scanner.nextInt();
         Boolean b3=(age1>age2)?true:false;
           if(b3.booleanValue()){
                System.out.println(str1+" is elder than "+str2);
            }
           else{
               System.out.println(str2+" is elder than "+str1);
            }
        }
    } 

Output:

Enter your name and age
Name1 : Reema
Age1 :21
Name2 : Geetanjali
Age2 :22
Geetanjali is elder than Reema

Example 3

public class JavaBooleanBooleanValueExample3 {
    public static void main(String[] args) {
        //for null value it will give an exception
        Boolean b1 = null;
        Boolean b2=b1.booleanValue();
        System.out.println("Value is "+b2);
    }
}

Output

Exception in thread "main" java.lang.NullPointerException
      at com.TutorialAndExample.JavaBooleanBooleanValueExample3.main(JavaBooleanBooleanValue
Example3.java:7)