Here you can find the source of writeObject(File outFile, Object data)
public static void writeObject(File outFile, Object data) throws IOException
//package com.java2s; /* /* w w w.j a v a 2s. co m*/ * Copyright (C) 2013 facetoe - facetoe@ymail.com * * This program 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. * * This program 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 this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ import java.io.*; public class Main { public static void writeObject(File outFile, Object data) throws IOException { FileOutputStream fileOut = new FileOutputStream(outFile); ObjectOutputStream outStream = new ObjectOutputStream(fileOut); try { outStream.writeObject(data); } finally { outStream.close(); fileOut.close(); } } }