1 /* 2 * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /* 25 * @test 26 * @bug 6294607 27 * @summary Test verifies whether getCompressionTypes() returns only one 28 * compression type(LZW) for GIF and not more than that. 29 * @run main GIFCompressionTypesTest 30 */ 31 32 import java.util.Iterator; 33 import javax.imageio.ImageIO; 34 import javax.imageio.ImageWriteParam; 35 import javax.imageio.ImageWriter; 36 37 public class GIFCompressionTypesTest { 38 39 static ImageWriter writer = null; 40 41 public static void main(String args[]) { 42 Iterator it = ImageIO.getImageWritersByFormatName("gif"); 43 while (it.hasNext()) { 44 writer = (ImageWriter) it.next(); 45 break; 46 } 47 ImageWriteParam param = writer.getDefaultWriteParam(); 48 49 param.setCompressionMode(ImageWriteParam.MODE_EXPLICIT); 50 String compTypes[] = param.getCompressionTypes(); 51 // In GIF we support only one compression type : LZW 52 if (compTypes.length != 1) { 53 throw new RuntimeException("We support only one compression" 54 + " type in GIF : LZW"); 55 } 56 } 57 } 58