Java.lang.Boolean.compareTo() 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;



      // assign values to b1, b2

      b1 = new Boolean(true);

      b2 = new Boolean(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 );

      }

   }

}