Here you can find the source of uuidFromBytes(byte[] bytes)
public static UUID uuidFromBytes(byte[] bytes)
//package com.java2s; /*/*from w w w .j a v a2 s . co m*/ * 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; import java.util.UUID; public class Main { public static UUID uuidFromBytes(byte[] bytes) { ByteBuffer buffer = ByteBuffer.wrap(bytes); long msb = buffer.getLong(); long lsb = buffer.getLong(); return new UUID(msb, lsb); } }