Java.lang.Boolean.valueOf() Method



The java.lang.Boolean.valueOf(boolean b) returns a Boolean instance representing the specified boolean value. If the specified boolean value is true, this method returns Boolean.TRUE; if it is false, this method returns Boolean.FALSE.

If a new Boolean instance is not required, this method should generally be used in preference to the constructor Boolean(boolean), as this method is likely to yield significantly better space and time performance.


Following is the declaration for java.lang.Boolean.valueOf() method

public static Boolean valueOf(boolean b)


b − a boolean value

Return Value

This method returns a Boolean instance representing b.




The following example shows the usage of lang.Boolean.valueOf() method.

package com.tutorialspoint;

import java.lang.*;

public class BooleanDemo {

   public static void main(String[] args) {

      // create 2 Boolean objects b1, b2
      Boolean b1, b2;

      // create 2 boolean primitives and assign values
      boolean bool1 = true;
      boolean bool2 = false;

       *  static method is called using class name 
       *  assign result of valueOf method on bool1, bool2 to b1, b2
      b1 = Boolean.valueOf(bool1);
      b2 = Boolean.valueOf(bool2);

      String str1 = "Boolean instance of primitive " + bool1 + " is "  + b1;
      String str2 = "Boolean instance of primitive " + bool2 + " is "  + b2;

      // print b1, b2 values
      System.out.println( str1 );
      System.out.println( str2 );

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

Boolean instance of primitive true is true
Boolean instance of primitive false is false