搜索JTree

我有一棵树,我正在找。我已经编写了一个快速递归搜索函数。该函数将父/子节点名称对作为字符串。

private void RecursiveSearch(javax.swing.tree.DefaultMutableTreeNode node, java.util.ArrayList<TreeNode> nodelist, java.lang.String destination, java.lang.String origin) {
     nodelist.add(node);
     Controller.TreeData parentdata = (Controller.TreeData)node.getUserObject();
     for(int i = 0; i < node.getChildCount(); i++) {
        javax.swing.tree.DefaultMutableTreeNode childnode = (javax.swing.tree.DefaultMutableTreeNode)node.getChildAt(i);
        Controller.TreeData childdata = (Controller.TreeData)childnode.getUserObject();
        if (parentdata.GetName().trim().toUpperCase().equals(origin) && childdata.GetName().trim().toUpperCase().equals(destination)) {
            nodelist.add(childnode);
            return;
        }
    }
    // We didn't find it. Recurse.
    for(int i = 0; i < node.getChildCount(); i++) {
        RecursiveSearch((javax.swing.tree.DefaultMutableTreeNode)node.getChildAt(i), nodelist, destination, origin);
    }
    nodelist.remove(node);
}

但是,它不会在应该返回的时候返回值。我从TreeModel得到根节点,数组开始是空的。我检查了JTree和TreeModel,它们似乎都不提供任何类型的搜索功能。有什么建议吗?

编辑:我不会试图解释我原来的功能(它最初是用另一种语言编写的)。但我换成了这样:

javax.swing.tree.DefaultMutableTreeNode rootnode = (javax.swing.tree.DefaultMutableTreeNode)datatree.getModel().getRoot();
java.util.Enumeration nodeenum = rootnode.breadthFirstEnumeration();
while(nodeenum.hasMoreElements()) {
    javax.swing.tree.DefaultMutableTreeNode nextnode = (javax.swing.tree.DefaultMutableTreeNode)nodeenum.nextElement();
    Controller.TreeData data = (Controller.TreeData)nextnode.getUserObject();
    javax.swing.tree.DefaultMutableTreeNode parentnode = (javax.swing.tree.DefaultMutableTreeNode)nextnode.getParent();
    Controller.TreeData parentdata = (Controller.TreeData)(parentnode.getUserObject());
    if (parentdata.GetName().trim().toUpperCase().equals(origin) && data.GetName().trim().toUpperCase().equals(destination)) {
        datatree.setSelectionPath(new javax.swing.tree.TreePath(treemodel.getPathToRoot(nextnode)));
        return;
    }
}
javax.swing.JOptionPane.showMessageDialog(primaryframe, "Could not find the requested depots");

然而,它实际上似乎什么也没找到。我从根节点开始,所以它应该枚举整个树。修复了此版本中的空指针异常错误。