用java編的一個超超超級簡單的window程序的菜單

超級簡單的，只顯示，不做任何作用orz

主函數：

package program;
import ui.*;

public class program {

/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
FirstWindow first=new FirstWindow();
first.show();
}

}

調用類（類放在ui包中，類名為FirstWindow）：

package ui;
import javax.swing.*;

public class FirstWindow
{
public void show()
{
JFrame frame=new JFrame();
frame.setSize(400,300);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

JMenuBar menuBar=new JMenuBar();
JMenu menuFile=new JMenu();
menuFile.setText("File"); //Create menu1 File
JMenu menuNew=new JMenu();
menuNew.setText("New");
JMenuItem itemJava=new JMenuItem();
itemJava.setText("Java");
JMenuItem itemOpenFile=new JMenuItem();
itemOpenFile.setText("Open");
JMenuItem itemSaveFile=new JMenuItem();
itemSaveFile.setText("Save");
JMenuItem itemExitFile=new JMenuItem();
itemExitFile.setText("Exit");

menuNew.add(itemJava);
menuFile.add(menuNew); //add New into menu
menuFile.add(itemOpenFile); //add Open into menu
menuFile.add(itemSaveFile); //add Save into menu
menuFile.add(itemExitFile); //add Exit into menu
menuBar.add(menuFile);

//Create menu1 File
JMenu menuEdit=new JMenu();
menuEdit.setText("Edit");
JMenuItem menuCut=new JMenuItem();
menuCut.setText("Cut");
JMenuItem menuPaste=new JMenuItem();
menuPaste.setText("Paste");
JMenuItem menuDel=new JMenuItem();
menuDel.setText("Delete");


menuBar.add(menuEdit);
menuEdit.add(menuCut); //add Cut into menu
menuEdit.add(menuPaste); //add Paste into menu
menuEdit.add(menuDel); //add Del into menu

frame.setJMenuBar(menuBar);

frame.setVisible(true);
}
}