JDK14/Java14源码在线阅读

/*
 * Copyright (c) 2000, 2010, 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
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package com.sun.imageio.spi;

import java.io.File;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Locale;
import javax.imageio.spi.ImageOutputStreamSpi;
import javax.imageio.stream.ImageOutputStream;
import javax.imageio.stream.FileCacheImageOutputStream;
import javax.imageio.stream.MemoryCacheImageOutputStream;

public class OutputStreamImageOutputStreamSpi extends ImageOutputStreamSpi {

    private static final String vendorName = "Oracle Corporation";

    private static final String version = "1.0";

    private static final Class<?> outputClass = OutputStream.class;

    public OutputStreamImageOutputStreamSpi() {
        super(vendorName, version, outputClass);
    }

    public String getDescription(Locale locale) {
        return "Service provider that instantiates an OutputStreamImageOutputStream from an OutputStream";
    }

    public boolean canUseCacheFile() {
        return true;
    }

    public boolean needsCacheFile() {
        return false;
    }

    public ImageOutputStream createOutputStreamInstance(Object output,
                                                        boolean useCache,
                                                        File cacheDir)
        throws IOException {
        if (output instanceof OutputStream) {

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