public class Main { public static void main(String[] argv) throws Exception {
BufferedInputStream fin = new BufferedInputStream(new FileInputStream("in.dat"));
BufferedOutputStream fout = new BufferedOutputStream(new FileOutputStream("out.dat")); int i; do {
i = fin.read(); if (i != -1)
fout.write(i);
} while (i != -1);
fin.close();
fout.close();
}
}