tree 怎么得到鼠标右键事件啊！一定马上就给40分

Question

from :http://java.sun.com/j2se/1.4/docs/api/javax/swing/JTree.html
If you are interested in detecting either double-click events or when a user clicks on a node, regardless of whether or not it was selected, we recommend you do the following:  final JTree tree = ...; MouseListener ml = new MouseAdapter() {
     public void mousePressed(MouseEvent e) {
         int selRow = tree.getRowForLocation(e.getX(), e.getY());
         TreePath selPath = tree.getPathForLocation(e.getX(), e.getY());
         if(selRow != -1) {
             if(e.getClickCount() == 1) {
                 mySingleClick(selRow, selPath);
             }
             else if(e.getClickCount() == 2) {
                 myDoubleClick(selRow, selPath);
             }
         }
     }
 };
 tree.addMouseListener(ml);
 

Answer 1

addMouseListener(new MouseAdapter(){
  // 也可以使用mousePressed(MouseEvent e)
  public void mouseReleased(MouseEvent e){
      if(e.isPopupTrigger() && popupMenu!=null)
         popupMenu.show(e.getComponent(), e.getX(), e.getY());
         // 这里 popupMenu 是一个JPopupMenu
  }      
});