FileInputStream inFile = new FileInputStream(args[0]);
FileOutputStream outFile = new FileOutputStream(args[1]);
FileChannel inChannel = inFile.getChannel();
FileChannel outChannel = outFile.getChannel();
for (ByteBuffer buffer = ByteBuffer.allocate(1024*1024);
inChannel.read(buffer) != -1;
buffer.clear()) {
buffer.flip();
while (buffer.hasRemaining()) outChannel.write(buffer);
}
inChannel.close();
outChannel.close();
