question: private void loadBinary ( InputStream is ) throws IOException { if ( is instanceof FileInputStream ) { FileInputStream fis = ( FileInputStream ) is ; FileChannel fc = fis . getChannel ( ) ; MappedByteBuffer bb = fc . map ( FileChannel . MapMode . READ_ONLY , 0 , ( int ) fc . size ( ) ) ; bb . load ( ) ; loadBinary ( bb ) ; is . close ( ) ; } else { loadBinary ( new DataInputStream ( is ) ) ; } }
target:  Loads a binary file from the input stream.