Here you can find the source of getUnsignedByte(final ByteBuffer pByteBuffer)
public static short getUnsignedByte(final ByteBuffer pByteBuffer)
//package com.java2s; import java.nio.ByteBuffer; public class Main { public static short getUnsignedByte(final ByteBuffer pByteBuffer) { return (short) (pByteBuffer.get() & 0xFF); }//ww w .ja va 2 s . c o m public static short getUnsignedByte(final ByteBuffer pByteBuffer, final int pPosition) { return (short) (pByteBuffer.get(pPosition) & (short) 0xFF); } }