Here you can find the source of writeFileToStream(File file, OutputStream os)
public static void writeFileToStream(File file, OutputStream os) throws IOException
//package com.java2s; /* /*ww w. ja v a2s . co m*/ * Sourcerer: an infrastructure for large-scale source code analysis. * Copyright (C) by contributors. See CONTRIBUTORS.txt for full list. * * 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 3 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, see <http://www.gnu.org/licenses/>. */ import java.io.File; import java.io.FileInputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; public class Main { public static void writeFileToStream(File file, OutputStream os) throws IOException { if (file == null) { return; } try (InputStream is = new FileInputStream(file)) { byte[] buff = new byte[1024]; int read = 0; while ((read = is.read(buff)) != -1) { os.write(buff, 0, read); } } } }