Hi, Null character is the default value of a char (which is a primitive type). The excat value is '\u0000' . A pipe is a way to transfer datas, which works like petrol pipe-line. You put things in one end and they come out the other. Maybe you should look at I/O, InputStream etc... to find what you need. Hope it helps
Brett Anthoine<br />"640k should be enough for anybody."