notepad简单界面设计

import java.awt.Dimension;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JMenuBar;
import javax.swing.JMenu;
import javax.swing.JMenuItem;
public class MenuFrame extends JFrame
{
JPanel contentPane;
JMenuBar mnuNotepad = new JMenuBar();
JMenu mnuFile = new JMenu();
JMenu mnuEdit = new JMenu();
JMenu mnuFormat = new JMenu();
JMenuItem mnuNew = new JMenuItem();
JMenuItem mnuOpen = new JMenuItem();
JMenuItem mnuSave = new JMenuItem();
JMenuItem mnuSaveAs = new JMenuItem();
JMenuItem mnuExit = new JMenuItem();
JMenu mnuHelp = new JMenu();
public MenuFrame() {
try {
setDefaultCloseOperation(EXIT_ON_CLOSE);
jbInit();
} catch (Exception exception) {
exception.printStackTrace();
}
}
private void jbInit() throws Exception {
contentPane = (JPanel) getContentPane();
contentPane.setLayout(null);
this.setJMenuBar(mnuNotepad);
setSize(new Dimension(400, 300));
setTitle("菜单");
mnuFile.setText("文件");
mnuEdit.setText("编辑");
mnuFormat.setText("格式");
mnuNew.setText("新建");
mnuOpen.setText("打开...");
mnuSave.setText("保存");
mnuSaveAs.setText("另存为...");
mnuExit.setText("退出");
mnuHelp.setText("帮助");
mnuNotepad.add(mnuFile);
mnuNotepad.add(mnuEdit);
mnuNotepad.add(mnuFormat);
mnuNotepad.add(mnuHelp);
mnuFile.add(mnuNew);
mnuFile.add(mnuOpen);
mnuFile.add(mnuSave);
mnuFile.add(mnuSaveAs);
mnuFile.add(mnuExit);
setVisible(true);
}
public static void main(String[] args)
{
new MenuFrame();
}
}

运行效果：