怎样判断鼠标是否点在了jlist的选项上？该怎么处理

怎样判断鼠标是否点在了jlist的选项上？
我想制做这么一个jlist：有三个选项 abc；当我点在这三个选项的上的时候，呈现选中状态；当我点在jlist空白处（没有选项的地方），取消选中状态。现在的问题是，我用e.getpoint（）返回鼠标点击的坐标,用什么方法判断这个坐标是不是在空白处呢？

[解决办法]
这是实现楼主所想要效果的一个例子，点击查看可以看到是否选择了JList的某一项，取消选择会有提示

Java code

import java.awt.BorderLayout; 
 import java.awt.Container; 
 import java.awt.Point; 
 import java.awt.event.ActionEvent; 
 import java.awt.event.ActionListener; 
 import java.awt.event.MouseEvent; 
 import java.awt.event.MouseListener; 
  
 import javax.swing.JButton; 
 import javax.swing.JFrame; 
 import javax.swing.JList; 
 import javax.swing.JOptionPane; 
  
 public class MyDemo1 extends JFrame implements MouseListener,ActionListener{ 
 @Override 
 public void actionPerformed(ActionEvent e) { 
 // TODO Auto-generated method stub 
 if(e.getSource()==btn){ 
 Object selectedObject=list.getSelectedValue(); 
 if(selectedObject!=null){ 
 JOptionPane.showMessageDialog(null,"选择项目"+selectedObject ); 
 System.out.println("选择项目"+selectedObject); 
 }else{ 
 JOptionPane.showMessageDialog(null,"没选择任何项目" ); 
 System.out.println("没选择任何项目"); 
 } 
  
 } 
 } 
  
 @Override 
 public void mouseClicked(MouseEvent e) { 
 // TODO Auto-generated method stub 
 System.out.println("mouseClicked"); 
 Point p=e.getPoint(); 
 if(list.contains(p)){//判断是否在JList的区域范围内 
 System.out.println("合法范围"); 
 }else{ 
 System.out.println("无效范围"); 
 list.clearSelection();//不在区域范围内取消选择 
 } 
 } 
  
 @Override 
 public void mousePressed(MouseEvent e) { 
 // TODO Auto-generated method stub 
 System.out.println("mousePressed"); 
 } 
  
 @Override 
 public void mouseReleased(MouseEvent e) { 
 // TODO Auto-generated method stub 
  
 } 
  
 @Override 
 public void mouseEntered(MouseEvent e) { 
 // TODO Auto-generated method stub 
  
 } 
  
 @Override 
 public void mouseExited(MouseEvent e) { 
 // TODO Auto-generated method stub 
  
 } 
  
 private String[] names={"A","B","C"}; 
 private JList list=null; 
 private JButton btn=null; 
 private Container container=null; 
  
 public MyDemo1(String title){ 
 super(title); 
 btn=new JButton("查看"); 
 list=new JList(names); 
 container=this.getContentPane(); 
 container.setLayout(new BorderLayout()); 
 container.add(list,BorderLayout.WEST); 
 container.add(btn,BorderLayout.EAST); 
  
 //list. 
 btn.addActionListener(this); 
 this.addMouseListener(this); 
 this.pack(); 
 this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
 this.setLocationRelativeTo(null); 
 this.setVisible(true); 
 } 
  
 public static void main(String[] args){ 
 new MyDemo1("demo"); 
 } 
 }