Here you can find the source of writeInt(long v, OutputStream out)
public static void writeInt(long v, OutputStream out) throws IOException
//package com.java2s; /*/*ww w . j a v a2s .c o m*/ Copyright 2005-2015, Olivier PETRUCCI. This file is part of Areca. Areca is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. Areca 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 General Public License for more details. You should have received a copy of the GNU General Public License along with Areca; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ import java.io.IOException; import java.io.OutputStream; public class Main { public static void writeInt(long v, OutputStream out) throws IOException { out.write((int) ((v >>> 0) & 0xff)); out.write((int) ((v >>> 8) & 0xff)); out.write((int) ((v >>> 16) & 0xff)); out.write((int) ((v >>> 24) & 0xff)); } }