Here you can find the source of expandFully(JTree tree, TreePath path)
public static void expandFully(JTree tree, TreePath path)
//package com.java2s; /* //from ww w . ja va 2 s .c o m * Copyright 2003,2004,2005 Colin Crist * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * */ import javax.swing.JTree; import javax.swing.tree.TreeNode; import javax.swing.tree.TreePath; public class Main { public static void expandFully(JTree tree, TreePath path) { tree.expandPath(path); TreeNode node = (TreeNode) path.getLastPathComponent(); for (int i = 0; i < node.getChildCount(); i++) { expandFully(tree, path.pathByAddingChild(node.getChildAt(i))); } } }