Here you can find the source of getBytes(File f)
public static byte[] getBytes(File f)
//package com.java2s; /*//from w w w . j a v a2 s . co m * (c) Copyright 2010-2011 AgileBirds * * This file is part of OpenFlexo. * * OpenFlexo 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. * * OpenFlexo 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 OpenFlexo. If not, see <http://www.gnu.org/licenses/>. * */ import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.IOException; public class Main { public static byte[] getBytes(File f) { byte[] b = new byte[(int) f.length()]; FileInputStream fis; try { fis = new FileInputStream(f); } catch (FileNotFoundException e) { e.printStackTrace(); return null; } try { fis.read(b); return b; } catch (IOException e) { e.printStackTrace(); } finally { try { fis.close(); } catch (IOException e) { e.printStackTrace(); } } return null; } }