question: public void testWrite5 ( ) throws Exception { Cipher cf = Cipher . getInstance ( "DES/CBC/PKCS5Padding" ) ; NullCipher nc = new NullCipher ( ) ; CipherOutputStream stream1 = new CipherOutputStream ( new BufferedOutputStream ( ( OutputStream ) null ) , nc ) ; CipherOutputStream stream2 = new CipherOutputStream ( stream1 , cf ) ; CipherOutputStream stream3 = new CipherOutputStream ( stream2 , nc ) ; stream3 . write ( new byte [ ] { 0 } , 0 , 0 ) ; }
target:  write(byte[] b, int off, int len)