Java - Boolean class

Java Boolean Class

The Java Boolean class wraps a value of the primitive type boolean in an object. An object of type Boolean contains a single field whose type is boolean.

Boolean Class Declaration in Java

Following is the declaration for java.lang.Boolean class −

 public final class Boolean extends Object implements Serializable, Comparable<Boolean> 

Boolean Class Fields

Following are the fields for java.lang.Boolean class −

• static Boolean FALSE − This is the Boolean object corresponding to the primitive value false.

• static Boolean TRUE − This is the Boolean object corresponding to the primitive value true.

• static Class<Boolean> TYPE − This is the Class object representing the primitive type boolean.

Boolean Class Constructors

Boolean Class Methods

Methods Inherited

This class inherits methods from the following classes −

• java.lang.Object

Example of Java Boolean Class

The following example shows the usage of some important methods provided by Boolean class.

 package com.tutorialspoint; public class BooleanDemo { public static void main(String[] args) { // create 2 Boolean objects b1, b2 Boolean b1, b2; // assign values to b1, b2 b1 = Boolean.valueOf(true); b2 = Boolean.valueOf(false); // create an int res int res; // compare b1 with b2 res = b1.compareTo(b2); String str1 = "Both values are equal "; String str2 = "Object value is true"; String str3 = "Argument value is true"; if( res == 0 ) { System.out.println( str1 ); } else if( res > 0 ) { System.out.println( str2 ); } else if( res < 0 ) { System.out.println( str3 ); } } } 

Output

Let us compile and run the above program, this will produce the following result −

 Object value is true