menu.java~1~

java2参考大全上的例子的源码和自己的理解.

package menu;

/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2005</p>
 * <p>Company: </p>
 * @author not attributable
 * @version 1.0
 */

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class Menu
    extends JFrame {
  public static void main(String[] args) {
    Menu menu = new Menu();
  }

  public Menu() {

    // 创建菜单条
    JMenuBar mb = new JMenuBar();
    setJMenuBar(mb);

    //创建菜单
    JMenu MenuFile = new JMenu("File");
    JMenu MenuEdit = new JMenu("Edit");

    mb.add(MenuFile);
    mb.add(MenuEdit);

    //创建菜单项
    JMenuItem mi1 = new JMenuItem("new");
    JMenuItem mi2 = new JMenuItem("open");
    JMenuItem mi3 = new JMenuItem("save");
    JMenuItem mi4 = new JMenuItem("close");
    MenuFile.add(mi1);
    MenuFile.add(mi2);
    MenuFile.add(mi3);
    MenuFile.add(mi4);
    this.show();
  }

  public boolean action(Event e, Object arg) {
    if (e.target instanceof JMenuItem) {
      MenuItem selected = (MenuItem) e.target;
      String s = selected.getLabel();
    //     switch  (s) {
      //  case "new":  ;
      //  case "open":  ;
      //  case "save":  ;
      //  case "close":  ;
   //     }
    }
    return true;
  }
}