Java tutorial
//package com.java2s; import java.nio.ByteBuffer; public class Main { public static void putUnsignedByte(ByteBuffer bb, int value) { bb.put((byte) (value & 0xff)); } public static void putUnsignedByte(ByteBuffer bb, int position, int value) { bb.put(position, (byte) (value & 0xff)); } }