怎么样鼠标右击事件功能？

Question

假设我想右击鼠标时，能够自动弹出一个可以供你选择的面板选项，就像是菜单一样的条目，我该怎么实现这种功能呢？
有请高手指点迷津！
谢谢拉！

Answer 1

创建一个JPopupMenu，添加你的菜单项，最后在鼠标事件处理方法里把他show出来。

Answer 2

package socket;import java.awt.*;
import java.awt.event.*;import javax.swing.*;public class JComboBoxDemo extends JFrame{    String[] s={"西瓜","苹果","草莓","香蕉","葡萄"};
    JComboBox combo=new JComboBox(s);
    JPopupMenu popupMenu = new JPopupMenu();
    JMenuItem jadd = new JMenuItem("add");
    JMenuItem jremove = new JMenuItem("remove");
    
    public JComboBoxDemo(){
        super("JComboBoxDemo");
        this.setSize(200,200);
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        Container c = this.getContentPane();
        c.setLayout(new FlowLayout(FlowLayout.LEADING));
        this.getContentPane().add(combo);
        JButton add = new JButton("add");
        JButton remove = new JButton("remove");
        add.addActionListener(new ActionListener(){
            public void actionPerformed(ActionEvent e){
                combo.addItem("test");
            }
        });
        
        remove.addActionListener(new ActionListener(){
            public void actionPerformed(ActionEvent e){
                combo.removeAllItems();
            }
        });
        
        jadd.addActionListener(new ActionListener(){
            public void actionPerformed(ActionEvent e){
                combo.addItem("test");
            }
        });
        
        jremove.addActionListener(new ActionListener(){
            public void actionPerformed(ActionEvent e){
                combo.removeAllItems();
            }
        });
        
        popupMenu.add(jadd);
        popupMenu.addSeparator();
        popupMenu.add(jremove);
        
        
        this.getContentPane().add(add);
        this.getContentPane().add(remove);
        this.addMouseListener(new MouseAdapter(){
            //添加右键菜单
            public void mouseReleased(MouseEvent e){
                if (e.isPopupTrigger()) { 
                    popupMenu.show(e.getComponent(), e.getX(), e.getY()); 
                  } 
            }
        });
        this.setVisible(true);
    }
    
    public static void main(String[] args){
        new JComboBoxDemo();
    }
    
}