swing弹出菜单显示多个图片的问题？

 swing中点击一个按钮，在按钮上方弹出一个菜单显示多个图片，提供选择操作，该如何实现：（
菜单的样式类似附件中的图片。

没法传附件，直接上代码吧，你自己弄五张表情的gif图片放到工程/org/zergle/test/swing/faces/目录下，再弄一张face.gif放到/org/zergle/test/swing/icons/下作按钮的图标

[code="java"]
package org.zergle.test.swing;

import javax.swing.Icon;
import javax.swing.ImageIcon;

public class FaceManager {
private static final String FACE_PKG = "/org/zergle/test/swing/faces/";
private static final String ICON_PKG = "/org/zergle/test/swing/icons/";
private static final Icon[] FACES;

static {
    FACES = new ImageIcon[5];
    for (int i = 0; i < FACES.length; i++) {
        FACES[i] = new ImageIcon(FaceManager.class.getResource(FACE_PKG + (i + 1) + ".gif"));
    }
}

private FaceManager() {}

public static Icon[] getFaces() {
    return FACES;
} 

public static Icon getIcon(String name) {
    return new ImageIcon(FaceManager.class.getResource(ICON_PKG + name + ".gif"));
}

}
[/code]
[code="java"]
package org.zergle.test.swing;

import java.awt.FlowLayout;
import javax.swing.Icon;
import javax.swing.JLabel;
import javax.swing.JPopupMenu;

public class PopupFace extends JPopupMenu {
private static final long serialVersionUID = -6732655684556273891L;
private FlowLayout layout = new FlowLayout(FlowLayout.LEFT);

public PopupFace() {
    layout.setVgap(0);
    layout.setHgap(0);
    this.setLayout(layout);
    this.setPopupSize(400, 300);
}

public void add(Icon icon) {
    JLabel face = new JLabel(icon);
    super.add(face);
}

}
[/code]
[code="java"]
package org.zergle.test.swing;

import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.Icon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;

public class QQLikeFrame extends JFrame {
private static final long serialVersionUID = -3124258696363228133L;
private JPanel pnlSouth = new JPanel();
private JButton btnFace = new JButton(FaceManager.getIcon("face"));
private PopupFace popupFace = new PopupFace();

private JPanel container;

public QQLikeFrame() {
    this.setDefaultCloseOperation(DISPOSE_ON_CLOSE);

    Icon[] faces = FaceManager.getFaces();
    for (int i = 0; i < faces.length; i++) {
        this.popupFace.add(faces[i]);
    }
    this.pnlSouth.add(this.btnFace);
    this.btnFace.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent e) {
            popupFace.show(QQLikeFrame.this, 0, 0);
        }
    });
    this.container = (JPanel) this.getContentPane();
    this.container.add(pnlSouth, BorderLayout.SOUTH);
    this.setSize(600, 400);
    this.setVisible(true);
}

/**
 * 
 * @param args
 */
public static void main(String[] args) {
    new QQLikeFrame();
}

}
[/code]