Java tutorial
//package com.java2s; import java.nio.ByteBuffer; public class Main { /** * Converts an array of 8 bytes into a long. * * @param bytes The bytes. * @return The long. */ public static long bytesToLong(final byte[] bytes) { final ByteBuffer buffer = ByteBuffer.allocate(8); buffer.put(bytes, 0, 8); buffer.flip(); return buffer.getLong(); } }