Here you can find the source of clearTreeIcon(JTree tree)
public static void clearTreeIcon(JTree tree)
//package com.java2s; /*/*from w w w . java 2s. c o m*/ Open Auto Trading : A fully automatic equities trading platform with machine learning capabilities Copyright (C) 2015 AnyObject Ltd. This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program 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 General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ import javax.swing.*; import javax.swing.tree.DefaultTreeCellRenderer; public class Main { public static void clearTreeIcon(JTree tree) { DefaultTreeCellRenderer renderer = new DefaultTreeCellRenderer(); renderer.setOpenIcon(null); renderer.setClosedIcon(null); //renderer.setLeafIcon(null); tree.setCellRenderer(renderer); } }