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/* * Copyright (c) 1997, 1998, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation.  Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code 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 * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package javax.swing; import java.awt.*;import java.awt.image.*; /** ImageObserver for DebugGraphics, used for images only.  *  * @author Dave Karlton  */class DebugGraphicsObserver implements ImageObserver {    int lastInfo;     synchronized boolean allBitsPresent() {        return (lastInfo & ImageObserver.ALLBITS) != 0;    }     synchronized boolean imageHasProblem() {        return ((lastInfo & ImageObserver.ERROR) != 0 ||                (lastInfo & ImageObserver.ABORT) != 0);    }     public synchronized boolean imageUpdate(Image img, int infoflags,                                            int x, int y,                                            int width, int height) {        lastInfo = infoflags;        return true;    }}