Java File Read via ByteBuffer readFullyAndClose(InputStream input)

Description

read Fully And Close

License

Apache License

Declaration

static byte[] readFullyAndClose(InputStream input) throws IOException 

Method Source Code

//package com.java2s;
/*//from  w w w  .j a v  a  2s . c o  m
 *  Copyright 2017 Alexey Andreev.
 *
 *  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.IOException;
import java.io.InputStream;
import java.nio.ByteBuffer;
import java.util.Arrays;

public class Main {
    static byte[] readFullyAndClose(InputStream input) throws IOException {
        ByteBuffer result = ByteBuffer.wrap(new byte[Math.min(512,
                input.available())]);
        while (true) {
            if (result.remaining() == 0) {
                result = ByteBuffer.wrap(Arrays.copyOf(result.array(),
                        result.capacity() * 2));
            }
            int actuallyRead = input.read(result.array(),
                    result.position(), result.remaining());
            if (actuallyRead == -1) {
                break;
            }
            result.position(result.position() + actuallyRead);
        }

        byte[] b = Arrays.copyOf(result.array(), result.position());
        input.close();
        return b;
    }
}

Related

1. readFromFile(String fileName)
2. readFromSocket(SocketChannel channel)
3. readFull(Reader in)
4. readFully(final Reader input, final char[] buffer, final int offset, final int length)
5. readFully(InputStream in)
6. readHeaderArea(InputStream in)
7. readInputStream(InputStream input)
8. readInputStreamToString(InputStream inputStream)
9. readInt(byte[] bytes, int index)