Java.lang.Boolean.valueOf() 方法

package com.codingdict;



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 );

   }

}