Here you can find the source of createFolderNode(Object userObject)
public static DefaultMutableTreeNode createFolderNode(Object userObject)
//package com.java2s; /*//from ww w . j a v a2 s . c o m * Copyright (C) 2001-2004 Colin Bell * colbell@users.sourceforge.net * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ import javax.swing.tree.DefaultMutableTreeNode; public class Main { public static DefaultMutableTreeNode createFolderNode(Object userObject) { DefaultMutableTreeNode newFolder = new DefaultMutableTreeNode(userObject) { public boolean isLeaf() { return false; } }; return newFolder; } }