question: public final static void copy ( final InputStream in , final OutputStream out ) throws IOException { final byte [ ] buffer = new byte [ 0xffff ] ; int len ; try { while ( ( len = in . read ( buffer ) ) != - 1 ) out . write ( buffer , 0 , len ) ; } finally { closeEL ( in ) ; closeEL ( out ) ; } }
target:  copy a inputstream to a outputstream