Here you can find the source of waitImage(Image image)
public static void waitImage(Image image)
//package com.java2s; /**/* w w w .j av a2s . c o m*/ * * Copyright 2008 - 2009 * * 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. * * @project loon * @author cping * @email?javachenpeng@yahoo.com * @version 0.1 */ import java.awt.Image; import java.awt.MediaTracker; import java.awt.Panel; import java.awt.Toolkit; import java.awt.image.BufferedImage; public class Main { final static public Toolkit toolKit = Toolkit.getDefaultToolkit(); private static Panel context = new Panel(); public static void waitImage(Image image) { if (image == null) { return; } if (image instanceof BufferedImage) { return; } MediaTracker mediaTracker = null; try { if (context != null) { mediaTracker = new MediaTracker(context); mediaTracker.addImage(image, 0); if ((mediaTracker.statusID(0, true) & MediaTracker.ERRORED) != 0) { throw new Exception(); } } } catch (Exception e) { if (mediaTracker != null) { mediaTracker.removeImage(image, 0); mediaTracker = null; } } waitImage(100, image); } private static void waitImage(int delay, Image image) { try { for (int i = 0; i < delay; i++) { if (toolKit.prepareImage(image, -1, -1, null)) { return; } Thread.sleep(delay); } } catch (Exception e) { } } }