请问jlist怎样实现鼠标双击事件打开一个对话框

import javax.swing.event.ListSelectionEvent;
import javax.swing.JList;


 JList jList1 = new JList();

 class SymMouse extends java.awt.event.MouseAdapter
  {
    public void mouseClicked(java.awt.event.MouseEvent e)
    {
      Object object = e.getSource();
      if(object==jList1)
        jList1_mouseClicked(e);
    }
  }

 void jList1_mouseClicked(java.awt.event.MouseEvent event)
  {
    if(event.getModifiers()==MouseEvent.BUTTON1_MASK&&event.getClickCount()==2)
    {
JOptionPane.showMessageDialog(this,"正在测试","警告",JOptionPane.WARNING_MESSAGE);
      
     }
  }
SymMouse picker = new SymMouse()
jList1.addMouseListener(picker);