Here you can find the source of toInteger(byte[] input)
public static int toInteger(byte[] input)
//package com.java2s; //License from project: Apache License public class Main { public static int toInteger(byte[] input) { return toInteger(input, 0); }//from ww w . j a va 2s. c o m private static int toInteger(byte[] input, int offset) { assert offset + 4 <= input.length : "Invalid length " + input.length; return ((input[offset++] & 0xff) << 24) | ((input[offset++] & 0xff) << 16) | ((input[offset++] & 0xff) << 8) | ((input[offset++] & 0xff)); } }