WidowMenu.java

package chuangkou;
import javax.swing.*;
import java.awt.event.InputEvent;
import java.awt.event.KeyEvent;
import static javax.swing.JFrame.*;
public class WindowMenu extends JFrame{
JMenuBar menubar;
JMenu menu,subMenu;
JMenuItem item1,item2;
public WindowMenu() {}
public WindowMenu(String s,int x,int y,int w,int h) {
	init(s);
	setLocation(x,y);
	setSize(w,h);
	setVisible(true);
	setDefaultCloseOperation(DISPOSE_ON_CLOSE);
}
void init(String s) {
	setTitle(s);
	menubar=new JMenuBar();
	menu=new JMenu("菜单");
	subMenu=new JMenu("软件项目");
	item1=new JMenuItem("java话题");
	item2=new JMenuItem("动画话题");
	item1.setAccelerator(KeyStroke.getKeyStroke('A'));
	item2.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_S,InputEvent.CTRL_DOWN_MASK));
	menu.add(item1);
	menu.addSeparator();
	menu.add(item2);
	menu.add(subMenu);
	subMenu.add(new JMenuItem("汽车销售系统"));
	subMenu.add(new JMenuItem("农场信息"));
	menubar.add(menu);
	setJMenuBar(menubar);
}
}

Example9_2.java

package chuangkou;

public class Example9_2 {
public static void main(String arg[]) {
	WindowMenu win=new WindowMenu("带菜单的窗口",20,30,200,190);
}

}

执行之后的结果: