Java File Read via ByteBuffer readShort(byte[] bytes, int start)

Description

Reads a short from the bytes array start position.

License

Apache License

Declaration

public static short readShort(byte[] bytes, int start) 

Method Source Code

//package com.java2s;
/**// w  ww .  j a v  a2 s. c  om
 * Copyright [2011] [Datasalt Systems S.L.]
 *
 * 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.nio.ByteBuffer;

public class Main {
    static ThreadLocal<ByteBuffer> shortBuffer = new ThreadLocal<ByteBuffer>() {

        @Override
        protected ByteBuffer initialValue() {
            return ByteBuffer.allocate(2);
        }

    };

    /**
     * Reads a short from the bytes array start position.
     */
    public static short readShort(byte[] bytes, int start) {
        ByteBuffer bb = shortBuffer.get();
        bb.clear();
        bb.put(bytes[start + 0]);
        bb.put(bytes[start + 1]);
        return bb.getShort(0);
    }
}

Related

1. readLong(InputStream is, ByteOrder bo)
2. readLong(RandomAccessFile raFile)
3. readLTriad(byte[] triad)
4. readNByte(ReadableByteChannel channel, int n)
5. readNIOFile(String filePath)
6. readShort(DataInput input)
7. readShortBuffer(DataInputStream input)
8. readShortByteArray(DataInput in)
9. readString(ByteArrayInputStream bin)