Adding non printable chars to a string in Java?

Question

I need to add some non printable chars to a string in java so it can be sent down a tcp pipe. the chars mean something to the protocol I am using (record separator and end o

Answer 1

If you wish, you can write these as Unicode literals (in chars or Strings):

final String endOfText = "\u0003";

• Unicode charts
• Java Language Specification Lexical Structure chapter

I am assuming that you don't literally want ASCII for a byte-based protocol (the chars are still 16 bits).