74 lines
2.9 KiB
Java
74 lines
2.9 KiB
Java
/*
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* Copyright (c) 2003, 2017, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 4892682 4892698
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* @summary Tests that the appropriate IllegalStateException is thrown if
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* ImageReader.read() or ImageWriter.write() is called without having
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* first set the input/output stream
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*/
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import java.awt.image.BufferedImage;
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import java.util.Iterator;
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import javax.imageio.ImageReader;
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import javax.imageio.ImageWriter;
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import javax.imageio.spi.IIORegistry;
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import javax.imageio.spi.ImageReaderSpi;
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import javax.imageio.spi.ImageWriterSpi;
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public class NullInputOutput {
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public static void main(String[] args) throws Exception {
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IIORegistry registry = IIORegistry.getDefaultInstance();
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// test ImageReader.read() for all available ImageReaders
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Iterator readerspis = registry.getServiceProviders(ImageReaderSpi.class,
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false);
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while (readerspis.hasNext()) {
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ImageReaderSpi readerspi = (ImageReaderSpi)readerspis.next();
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ImageReader reader = readerspi.createReaderInstance();
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try {
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reader.read(0);
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} catch (IllegalStateException ise) {
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// caught exception, everything's okay
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}
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}
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// test ImageWriter.write() for all available ImageWriters
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BufferedImage bi = new BufferedImage(1, 1, BufferedImage.TYPE_INT_RGB);
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Iterator writerspis = registry.getServiceProviders(ImageWriterSpi.class,
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false);
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while (writerspis.hasNext()) {
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ImageWriterSpi writerspi = (ImageWriterSpi)writerspis.next();
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ImageWriter writer = writerspi.createWriterInstance();
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try {
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writer.write(bi);
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} catch (IllegalStateException ise) {
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// caught exception, everything's okay
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}
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}
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}
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}
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