j_test2.java

来自「Java语言」· Java 代码 · 共 24 行

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class J_Test2 extends JFrame{
   public J_Test2(){
      super("Test anonymous inner class");
      Container container=getContentPane();
      container.setLayout(new FlowLayout(FlowLayout.CENTER));
      JButton b=new JButton("Press me");
      container.add(b);
      b.addActionListener(new J_ActionListener());
      setSize(100,80);
      setVisible(true);
   }
   public static void main(String[] args){
      J_Test1 application=new J_Test1();
      application.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   }
}
class J_ActionListener implements ActionListener{
      public void actionPerformed(ActionEvent e){
         System.out.println("The button is pressed");
      }
}