Java InputStream to OutputStream copyStream(InputStream in, OutputStream out)

Description

Copy stream.

License

Apache License

Parameter

Parameter	Description
in	input stream
out	output stream

Exception

Parameter	Description
IOException	for any I/O error

Declaration

public static void copyStream(InputStream in, OutputStream out) throws IOException 

Method Source Code

//package com.java2s;
/*//ww  w  .  ja va2s. c o m
 * Copyright 2011 Red Hat inc. and third party contributors as noted 
 * by the author tags.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.io.*;

public class Main {
    /**
     * Copy stream.
     *
     * @param in  input stream
     * @param out output stream
     * @throws IOException for any I/O error
     */
    public static void copyStream(InputStream in, OutputStream out) throws IOException {
        try {
            copyStreamNoClose(in, out);
        } finally {
            safeClose(in);
            safeClose(out);
        }
    }

    private static void copyStreamNoClose(InputStream in, OutputStream out) throws IOException {
        final byte[] bytes = new byte[8192];
        int cnt;
        while ((cnt = in.read(bytes)) != -1) {
            out.write(bytes, 0, cnt);
        }
        out.flush();
    }

    /**
     * Safe close.
     *
     * @param c the closeable
     */
    public static void safeClose(Closeable c) {
        try {
            if (c != null)
                c.close();
        } catch (IOException ignored) {
        }
    }
}

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