Applet 的四种方法调用init()、start() 、stop()和destory()

import java.applet.Applet;
import java.awt.FlowLayout;
import java.awt.HeadlessException;

import javax.swing.JApplet;
import javax.swing.JFormattedTextField;
import javax.swing.JFrame;
import javax.swing.JLabel;

public class AppletLifeCycle extends JApplet {

 public AppletLifeCycle()throws HeadlessException {
  super();
 }

 public void destroy() {
  System.out.println("Applet start() is invoked!");
 }

 public String getAppletInfo() {
  return "This is my default applet created by Eclipse";
 }

 public void init() {
  getContentPane().setLayout(new FlowLayout());
  getContentPane().add(new JLabel("Applet init() is invoked!"));
  System.out.println("Applet init() is invoked!");
 }

 public void start() {
  getContentPane().add(new JLabel("Applet start() is invoked!"));
  System.out.println("Applet start() is invoked!");
  repaint();
 }

 public void stop() {
  System.out.println("Applet stop() is invoked!");
 }
 
 
 public static void main(String []args){
//Applet程序里面有了main方法后，程序就可以像Application一样运行了。
  JApplet applet =new AppletLifeCycle();//实例化一个applet
  JFrame frame=new JFrame("AppletLifeCycle");//实例化一个顶级窗口frame
  frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  frame.getContentPane().add(applet);//将applet放到顶级窗口中
  frame.setSize(200,100);
  applet.init();
  applet.start();
  frame.setVisible(true);
 }
 
 

}

posted on 2008-03-01 09:58 鲁胜迪 阅读(2053) 评论(0)  编辑  收藏