java 构建一个简单的菜单

package test;

import java.awt.Container;
import java.awt.GridLayout;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.File;
import java.util.Vector;

import javax.swing.BorderFactory;
import javax.swing.ComboBoxEditor;
import javax.swing.ImageIcon;
import javax.swing.JCheckBox;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
public class test {
    public static void main(String[] args) {
        JFrame f=new JFrame("Welcome!");
        JTextArea text=new JTextArea();
        text.setEditable(true);
        f.getContentPane().add(new JScrollPane(text));
        JMenu menuFile=new JMenu("文件");
        menuFile.setIcon(new ImageIcon("d:"+File.separator+"Note.png"));
        JMenuBar menuBar=new JMenuBar();
        menuBar.add(menuFile);
        f.addWindowListener(new WindowAdapter(){
            public void windowClosing(WindowEvent arg0){
                System.exit(1);
            }
        });
        f.setJMenuBar(menuBar);
        f.setVisible(true);
        f.setSize(300,100);
        f.setLocation(300,200);
        
    }


}