Here you can find the source of recursiveTreeNode(DefaultMutableTreeNode node)
public static boolean recursiveTreeNode(DefaultMutableTreeNode node)
//package com.java2s; /*//ww w. java 2s . c o m * K-scope * Copyright 2012-2013 RIKEN, Japan * * 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. * * Version to work with SSHconnect. */ import javax.swing.tree.DefaultMutableTreeNode; public class Main { public static boolean recursiveTreeNode(DefaultMutableTreeNode node) { if (node == null) return false; Object[] objs = node.getUserObjectPath(); if (objs == null) return false; for (int i = 0; i < objs.length; i++) { for (int j = i; j < objs.length; j++) { if (i == j) continue; if (objs[i] == objs[j]) { return true; } } } return false; } }