Here you can find the source of checkReadSpace(FileInputStream aStream, ByteBuffer aBuf)
public static void checkReadSpace(FileInputStream aStream, ByteBuffer aBuf) throws IOException
//package com.java2s; /*//ww w .j a v a 2 s .co m Password Tracker (PATRA). An application to safely store your passwords. Copyright (C) 2006-2009 Bruno Ranschaert, S.D.I.-Consulting BVBA. For more information contact: nospam@sdi-consulting.com Visit our website: http://www.sdi-consulting.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 St, Fifth Floor, Boston, MA 02110-1301 USA */ import java.io.FileInputStream; import java.io.IOException; import java.nio.ByteBuffer; public class Main { public static void checkReadSpace(FileInputStream aStream, ByteBuffer aBuf) throws IOException { if (aBuf.remaining() < 8) { aBuf.flip(); aStream.getChannel().read(aBuf); aBuf.flip(); } } }