| /* |
| * Copyright (c) 2003, 2017, 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. |
| * |
| * 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. |
| */ |
| |
| /* |
| * @test |
| * @bug 4892682 4892698 |
| * @summary Tests that the appropriate IllegalStateException is thrown if |
| * ImageReader.read() or ImageWriter.write() is called without having |
| * first set the input/output stream |
| */ |
| |
| import java.awt.image.BufferedImage; |
| import java.util.Iterator; |
| |
| import javax.imageio.ImageReader; |
| import javax.imageio.ImageWriter; |
| import javax.imageio.spi.IIORegistry; |
| import javax.imageio.spi.ImageReaderSpi; |
| import javax.imageio.spi.ImageWriterSpi; |
| |
| public class NullInputOutput { |
| |
| public static void main(String[] args) throws Exception { |
| IIORegistry registry = IIORegistry.getDefaultInstance(); |
| |
| // test ImageReader.read() for all available ImageReaders |
| Iterator readerspis = registry.getServiceProviders(ImageReaderSpi.class, |
| false); |
| while (readerspis.hasNext()) { |
| ImageReaderSpi readerspi = (ImageReaderSpi)readerspis.next(); |
| ImageReader reader = readerspi.createReaderInstance(); |
| try { |
| reader.read(0); |
| } catch (IllegalStateException ise) { |
| // caught exception, everything's okay |
| } |
| } |
| |
| // test ImageWriter.write() for all available ImageWriters |
| BufferedImage bi = new BufferedImage(1, 1, BufferedImage.TYPE_INT_RGB); |
| Iterator writerspis = registry.getServiceProviders(ImageWriterSpi.class, |
| false); |
| while (writerspis.hasNext()) { |
| ImageWriterSpi writerspi = (ImageWriterSpi)writerspis.next(); |
| ImageWriter writer = writerspi.createWriterInstance(); |
| try { |
| writer.write(bi); |
| } catch (IllegalStateException ise) { |
| // caught exception, everything's okay |
| } |
| } |
| } |
| } |