学步园

//TestMenuBar.java</p> <p>package myprojects.testmenubar;</p> <p>import java.awt.*;<br /> import java.awt.event.*;</p> <p>class TestMenubar extends Frame {</p> <p> MenuBar menubar=new MenuBar();//定义菜单条</p> <p> Menu fileM=new Menu("File");//定义菜单<br /> Menu editM=new Menu("Edit");<br /> Menu toolsM=new Menu("Tools");<br /> Menu helpM=new Menu("Help");</p> <p> MenuItem fileM1=new MenuItem("New");//File菜单的菜单项<br /> MenuItem fileM2=new MenuItem("Open");<br /> MenuItem fileM3=new MenuItem("Save");</p> <p> Menu fileM4=new Menu("Print");<br /> MenuItem printM1=new MenuItem("Preview");<br /> MenuItem printM2=new MenuItem("Setting");</p> <p> CheckboxMenuItem fileM5=new CheckboxMenuItem("Quit",true);</p> <p> public TestMenubar() {<br /> addWindowListener(new WindowAdapter() {<br /> public void windowClosing(WindowEvent e) {<br /> dispose();<br /> System.exit(0);<br /> }<br /> });</p> <p> menubar.add(fileM); //增加菜单到菜单条<br /> menubar.add(editM);<br /> menubar.add(toolsM);<br /> menubar.add(helpM);</p> <p> fileM.add(fileM1);//增加菜单项到菜单<br /> fileM.add(fileM2);<br /> fileM.add(fileM3);<br /> fileM.add(fileM4);<br /> fileM.addSeparator(); //分隔符<br /> fileM.add(fileM5);</p> <p> fileM4.add(printM1);<br /> fileM4.add(printM2);<br /> printM1.addActionListener(new MenuListener());<br /> printM2.addActionListener(new MenuListener());</p> <p> this.setMenuBar(menubar);</p> <p> }</p> <p> public static void main(String args[]) {<br /> System.out.println("Starting TestMenubar...");<br /> TestMenubar mainFrame = new TestMenubar();<br /> mainFrame.setSize(400, 400);<br /> mainFrame.setTitle("TestMenubar");<br /> mainFrame.setVisible(true);<br /> }<br /> }<br />

//MenuListener.java</p> <p>package myprojects.testmenubar;</p> <p>import java.awt.event.ActionListener;<br /> import java.awt.event.ActionEvent;</p> <p>public class MenuListener implements ActionListener {<br /> public void actionPerformed(ActionEvent parm1) {<br /> // TODO: Add your code here<br /> if(parm1.getActionCommand().equals("Preview")){<br /> System.out.println("Doing Preview");<br /> }<br /> else if(parm1.getActionCommand().equals("Setting")){<br /> System.out.println("Doing Setting");<br /> }<br /> }<br /> }<br />