JAVA popupMenu弹出菜单了，怎样实现点击项产生事件

Question

如图：我弹出的这个PopupMenu ，想在点击添加好友响应事件，但是他ActionListener，该怎么样去
响应事件，求解,刚那个朋友说的不对。求解。

Answer 1

 import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

import javax.swing.JFrame;
import javax.swing.JMenuItem;
import javax.swing.JPanel;
import javax.swing.JPopupMenu;
import javax.swing.JTextArea;

/**
 * 右键弹出菜单测试类
 */
public class PopupMenuTest extends JFrame {

    /**
     * 
     */
    private static final long serialVersionUID = 1282599344832870566L;
    private JTextArea txtArea;
    private JMenuItem menuItem;
    private JPopupMenu popMenu;

    public PopupMenuTest() {
        setSize(200, 200);
        setLayout(new BorderLayout());
        JPanel panel = new JPanel();
        add(panel, BorderLayout.CENTER);
        panel.setLayout(new BorderLayout());

        txtArea = new JTextArea();
        panel.add(txtArea, BorderLayout.CENTER);
        txtArea.setText("右键清除内容");

        popMenu = new JPopupMenu();

        menuItem = new JMenuItem("清除");
        menuItem.addActionListener(actionListener);

        popMenu.add(menuItem);

        txtArea.addMouseListener(mouseAdapter);
    }

    /**
     * 文本区鼠标监听事件，右键弹出菜单。
     */
    private MouseAdapter mouseAdapter = new MouseAdapter() {
        @Override
        public void mouseClicked(MouseEvent e) {
            // TODO Auto-generated method stub
            if (e.getButton() == MouseEvent.BUTTON3) {
                popMenu.show(txtArea, e.getX(), e.getY());
            }
        }
    };

    /**
     * 弹出菜单响应事件
     */
    private ActionListener actionListener = new ActionListener() {

        @Override
        public void actionPerformed(ActionEvent e) {
            // TODO Auto-generated method stub
            if (e.getSource() == menuItem) {
                txtArea.setText("");
            }
        }
    };

    public static void main(String[] args) {
        PopupMenuTest popTest = new PopupMenuTest();
        popTest.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        popTest.setVisible(true);
    }
}