关于JList弹出式菜单问题???高手进

Question

我想在JList的每一个选项上加右键弹出式菜单,不知行不行(纯属个人想法),如可以,请详细讲解如何加?

Answer 1

import java.awt.BorderLayout;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;import javax.swing.*;public class T {
public static void main(String[] args) {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (Exception e) {
e.printStackTrace();
} final JList list = new JList(new String[] {"Item-1", "Item-2", "Item-3", "Item-4", "Item-5"});
JScrollPane sp = new JScrollPane(list);

final JPopupMenu popupMenu = new JPopupMenu();
popupMenu.add(new JMenuItem("MenuItem-1"));
popupMenu.add(new JMenuItem("MenuItem-2"));
popupMenu.add(new JMenuItem("MenuItem-3"));
popupMenu.add(new JMenuItem("MenuItem-4"));

list.addMouseListener(new MouseAdapter() {
public void mouseReleased(MouseEvent e) {
if (e.getButton() == MouseEvent.BUTTON3) {
int index = list.locationToIndex(e.getPoint());
if (index >= 0) {
list.setSelectedIndex(index);
popupMenu.show(list, e.getX(), e.getY());
}
}
}
});

JFrame f = new JFrame();
f.getContentPane().add(sp, BorderLayout.CENTER);
f.pack();
f.setLocationRelativeTo(null);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setVisible(true);
}
}