Java ByteBuffer to Byte Array readBytesWithShortLength(ByteBuffer bb)

Description

read Bytes With Short Length

License

Apache License

Declaration

public static ByteBuffer readBytesWithShortLength(ByteBuffer bb) 

Method Source Code

//package com.java2s;
/*//from  w  w w .  ja  v a  2  s  . c  o  m
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.*;

import java.nio.ByteBuffer;

public class Main {
    public static ByteBuffer readBytesWithShortLength(ByteBuffer bb) {
        int length = readShortLength(bb);
        return readBytes(bb, length);
    }

    public static int readShortLength(DataInput in) throws IOException {
        return in.readUnsignedShort();
    }

    public static int readShortLength(ByteBuffer bb) {
        int length = (bb.get() & 0xFF) << 8;
        return length | (bb.get() & 0xFF);
    }

    public static byte[] readBytes(DataInput in, int length) throws IOException {
        assert length > 0 : "length is not > 0: " + length;
        byte[] bytes = new byte[length];
        in.readFully(bytes);
        return bytes;
    }

    public static ByteBuffer readBytes(ByteBuffer bb, int length) {
        ByteBuffer copy = bb.duplicate();
        copy.limit(copy.position() + length);
        bb.position(bb.position() + length);
        return copy;
    }
}

Related

1. getBytesFromByteBuffer(Object obj)
2. readBytes(byte[] dest, int offset, int length, ByteBuffer buffer)
3. readBytes(SocketChannel socketChannel, ByteBuffer byteBuffer, int length)
4. readBytesFromByteBuffer(ByteBuffer byteBuffer)
5. readBytesNoLength(ByteBuffer logBuf, int size)
6. toArray(ByteBuffer buffer)
7. toArray(ByteBuffer buffer)
8. toArray(ByteBuffer buffer)
9. toArray(ByteBuffer buffer)