Here you can find the source of readLong(InputStream is)
public static long readLong(InputStream is) throws IOException
//package com.java2s; /*//from w w w . jav a2s. co m * Copyright (C) 2011-2013 The Animo Project * http://animotron.org * * This file is part of Animotron. * * Animotron is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License as * published by the Free Software Foundation, either version 3 of * the License, or (at your option) any later version. * * Animotron 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 Affero General Public License for more details. * * You should have received a copy of * the GNU Affero General Public License along with Animotron. * If not, see <http://www.gnu.org/licenses/>. */ import java.io.*; import java.nio.ByteBuffer; public class Main { public static long readLong(InputStream is) throws IOException { byte[] b = new byte[8]; is.read(b); return ByteBuffer.wrap(b).getLong(); } }