Inherinates Puzzle

 

public class Parent {

      public static int index;

      static{

            index = 1;

            System.out.println("Parent");

      }

}

 

public class Child extends Parent {

      static{

            index = 2;

            System.out.println("Son");

      }

}

 

 

 

public class TestExtend extends TestCase {

//    public void testConstructor(){

//          Son s = new Son();

//    }

     

      public void testConstructor1(){

            System.out.println("Child.index==="+Child.index);

            System.out.println("Parent.index===="+Parent.index);

           

      }

     

}

 

运行结果：

 

Parent

Child.index===1

Parent.index====1