老生常谈 java匿名内部类

abstract class AbsDemo
{
  abstract void show();
  
}


class Outer
{
  int x = 3;

  /*
  class Inner extends AbsDemo
  {
    int num = 90;
    void show()
    {
      System.out.println("show :"+num);
    }
    void abc()
    {
      System.out.println("hehe");
    }
  }
  */

  public void function()
  {
    //AbsDemo a = new Inner();
//    Inner in = new Inner();
//    in.show();
//    in.abc();
  

    AbsDemo d = new AbsDemo()
    {
      int num = 9;
      void show()
      {
        System.out.println("num==="+num);
      }
      void abc()
      {
        System.out.println("haha");
      }
    };

    d.show();
    //d.abc();//编译失败;

    



  }
}



class InnerClassDemo4 
{
  public static void main(String[] args) 
  {
    new Outer().function();
  }
}