Cliché Java anonymous inner class _java

Anonymous inner class:

1, anonymous inner class is actually the abbreviated form of the internal class.

2, the premise of defining anonymous internal classes:

The inner class must inherit a class or implement an interface.

3. Anonymous inner class format: New parent class or interface () {Defines the contents of subclasses}

4, in fact, anonymous inner class is an anonymous subclass object.    And the object is a little fat. Can be understood as an object with content.

5. The method defined in the anonymous inner class is best not to exceed 3.

Abstract class Absdemo
{
  abstract void Show ();
  
}


Class Outer
{
  int x = 3;
  /* Class Inner extends Absdemo
  {
    int num =;
    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 ();//compilation failed;

    



  }
}



Class InnerClassDemo4 
{public
  static void Main (string[] args) 
  {
    new Outer (). function ();
  }
}

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