?? mainframe.java
字號(hào):
import javax.swing.*;
import java.awt.event.*;
public class MainFrame extends JFrame{
JDesktopPane desktop;
JMenuBar MBar;
public MainFrame(){
super("MainFrame-Look and Feel");
setBounds(100,100,600,400);
buildContent();
buildMenu();
this.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
quit();
}
});//end of addWindowListener
}//end of main
protected void buildContent() {
desktop = new JDesktopPane();
getContentPane().add(desktop);
}//end of buildContent()
protected void buildMenu(){
MBar = new JMenuBar();
MBar.setOpaque(true);
JMenu mfile = buildFileMenu();
MBar.add(mfile);
setJMenuBar(MBar);
}//end of bulidMenu()
public void quit(){
System.exit(0);
}//end of quit()
public JMenu buildFileMenu() {
JMenu file = new JMenu("File");
JMenuItem newf = new JMenuItem("New");
JMenuItem open = new JMenuItem("Open");
JMenuItem close= new JMenuItem("Close");
JMenuItem quit = new JMenuItem("Exit");
file.add(newf);
file.add(open);
file.add(close);
file.addSeparator();
file.add(quit);
return file;
}//end of buildFileMenu()
}//end of class MainFrame
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