I don't think it has anything to do with Java. According to Dictionary.com (
http://dictionary.reference.com/browse/cipher), Cipher means one of the following:
1. zero.
2. any of the Arabic numerals or figures.
3. Arabic numerical notation collectively.
4. something of no value or importance.
5. a person of no influence; nonentity.
6. a secret method of writing, as by transposition or substitution of letters, specially formed symbols, or the like.
7. writing done by such a method; a coded message.
8. the key to a secret method of writing.
9. a combination of letters, as the initials of a name, in one design; monogram.
10. to use figures or numerals arithmetically.
11. to write in or as in cipher.
12. to calculate numerically; figure.
13. to convert into cipher.
Thus, Icipher could mean something along the lines of "I Am Nothing," which would go along with "Nothing to No One," the first track on Fiction. Or it could mean something like "I am cyptic" or "my cryptic message" which would also make some sense given the lyrics to the song.