Java tutorial
//package com.java2s; /** * Copyright 2009 - 2014 Jrgen Lundgren * * This file is part of org.macroing.wicked. * * org.macroing.wicked 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 3 of the License, or * (at your option) any later version. * * org.macroing.wicked 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 org.macroing.wicked. If not, see <http://www.gnu.org/licenses/>. */ import java.lang.reflect.InvocationTargetException; import javax.swing.JComponent; import javax.swing.SwingUtilities; public class Main { public static Object getClientProperty(final JComponent jComponent, final Object key, final Object value) { if (jComponent != null && key != null) { if (SwingUtilities.isEventDispatchThread()) { Object clientProperty = jComponent.getClientProperty(key); if (clientProperty == null) { clientProperty = value; } return clientProperty; } else { final Object[] clientProperty = new Object[] { value }; try { SwingUtilities.invokeAndWait(new Runnable() { @Override public void run() { clientProperty[0] = jComponent.getClientProperty(key); } }); } catch (InterruptedException | InvocationTargetException e) { } if (clientProperty[0] == null) { clientProperty[0] = value; } return clientProperty[0]; } } else { return value; } } }