Java - Boolean valueOf(boolean) method

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Description

The Java 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.

Declaration

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

public static Boolean valueOf(boolean b)

Parameters

b − a boolean value

Return Value

This method returns a Boolean instance representing b.

Exception

NA

Example 1

The following example shows the usage of Boolean valueOf() method for a boolean value as true.

package com.tutorialspoint;
public class BooleanDemo {
   public static void main(String[] args) {

      // create 1 Boolean object b1
      Boolean b1;

      // create 1 boolean primitive and assign value
      boolean bool1 = true;

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

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

      // print b1 values
      System.out.println( str1 );
   }
}

Output

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

Boolean instance of primitive true is true

Example 2

The following example shows the usage of Boolean valueOf() method for a boolean value as false.

package com.tutorialspoint;
public class BooleanDemo {
   public static void main(String[] args) {

      // create 1 Boolean object b1
      Boolean b1;

      // create 1 boolean primitive and assign value
      boolean bool1 = false;

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

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

      // print b1 values
      System.out.println( str1 );
   }
}

Output

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

Boolean instance of primitive false is false