Here you can find the source of getUUID(ByteBuffer bytes)
public static UUID getUUID(ByteBuffer bytes) throws IOException
//package com.java2s; /*//from w w w .jav a 2s. co m Copyright 2011 Semantic Discovery, Inc. (www.semanticdiscovery.com) This file is part of the Semantic Discovery Toolkit. The Semantic Discovery Toolkit is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. The Semantic Discovery Toolkit is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with The Semantic Discovery Toolkit. If not, see <http://www.gnu.org/licenses/>. */ import java.nio.ByteBuffer; import java.io.IOException; import java.util.UUID; public class Main { public static UUID getUUID(ByteBuffer bytes) throws IOException { if (bytes.remaining() < 16) throw new IOException("too few bytes specified for UUID value!"); long msb = bytes.getLong(); long lsb = bytes.getLong(); UUID value = new UUID(msb, lsb); return value; } public static UUID getUUID(ByteBuffer bytes, int pos) throws IOException { if ((pos + 16) > bytes.limit()) throw new IOException("too few bytes specified for UUID value!"); long msb = bytes.getLong(pos); long lsb = bytes.getLong(pos + 8); UUID value = new UUID(msb, lsb); return value; } }