java匿名內部類 例子

public A (){
  button1.addActionListener(
    new MyListener() );
}

class MyListener implements ActionListener {
   public void actionPerformed(ActionEvent e) {
       doSomething();
   }
}


//可以簡化爲

public A (){
    button1.addActionListener(
       new ActionListener (){
         public void actionPerformed(ActionEvent e) {
            doSomething();
         }
       }
     );
}