Enumeration e = root.breadthFirstEnumeration();
while(e.hasMoreElements())
{
DefaultMutableTreeNode node = (DefaultMutableTreeNode)e.nextElement();
if(node.getUserObject().equals(obj))return node;
}
while(e.hasMoreElements())
{
DefaultMutableTreeNode node = (DefaultMutableTreeNode)e.nextElement();
if(node.getUserObject().equals(obj))return node;
}
Enumeration breadthFirst = currentNode.breadthFirstEnumeration();
while (breadthFirst.hasMoreElements())
得到了breadthFirst.nextElement();breadthFirstEnumeration()方法也可以是depthFirstEnumeration()
或者preorderEnumeration() 或者 postorderEnumeration()