Example usage for java.nio ByteBuffer allocate

Introduction

In this page you can find the example usage for java.nio ByteBuffer allocate.

Prototype

public static ByteBuffer allocate(int capacity)

Source Link

Document

Creates a byte buffer based on a newly allocated byte array.

Usage

From source file:Main.java

public static int bytesToInt(byte[] bytes) {
    ByteBuffer buffer = ByteBuffer.allocate(4);
    reverseArray(bytes);/*  www  .  j  a  v a  2  s.co m*/
    buffer.put(bytes, 0, bytes.length);
    buffer.flip();// need flip
    return buffer.getInt();
}

From source file:Main.java

private static byte[] intToByteArray(int data) {
    return ByteBuffer.allocate(4).order(ByteOrder.LITTLE_ENDIAN).putInt(data).array();
}

From source file:Main.java

public static long bytesToLong(byte[] bytes) {
    ByteBuffer buffer = ByteBuffer.allocate(8);
    reverseArray(bytes);/*from w w  w  .j  a v a2  s .c  om*/
    buffer.put(bytes, 0, bytes.length);
    buffer.flip();// need flip
    return buffer.getLong();
}

From source file:Main.java

private static byte[] longToBytes(long paramLong) {
    ByteBuffer localByteBuffer = ByteBuffer.allocate(8);
    localByteBuffer.putLong(paramLong);//from   w ww.  ja  v a2s.c  o m
    return localByteBuffer.array();
}

From source file:Main.java

public static byte[] sumByte(byte[] bytes1, byte[] bytes2) {
    ByteBuffer byteBuffer = ByteBuffer.allocate(bytes1.length + bytes2.length);
    byteBuffer.put(bytes1);//ww  w  . ja v  a2s.co m
    byteBuffer.put(bytes2);
    return byteBuffer.array();
}

From source file:Main.java

public static byte[] my_int_to_bb_le(int myInteger) {
    return ByteBuffer.allocate(2).order(ByteOrder.LITTLE_ENDIAN).putInt(myInteger).array();
}

From source file:Main.java

public static byte[] my_short_to_bb_le(short myShort) {
    return ByteBuffer.allocate(2).order(ByteOrder.LITTLE_ENDIAN).putShort(myShort).array();
}

From source file:Main.java

public static byte commandByteRepresentation(final int command) {

    final byte[] bytes = ByteBuffer.allocate(4).putInt(command).array();

    return bytes[3];
}

From source file:Main.java

public static byte[] getIntArray(int val) {
    ByteBuffer typeBuffer = ByteBuffer.allocate(4).order(ByteOrder.BIG_ENDIAN);
    typeBuffer.putInt(val);
    return typeBuffer.array();
}

From source file:Main.java

public static void putMessageLength(byte[] message) {
    ByteBuffer lengthBuffer = ByteBuffer.allocate(4).order(ByteOrder.BIG_ENDIAN);
    lengthBuffer.putInt(message.length);

    byte[] lenArray = lengthBuffer.array();

    for (int i = 0; i < 4; i++)
        message[i] = lenArray[i];/* ww w .j av a  2  s .c o m*/
}