Need urgent help

Hi im working on a RS2 Private server i have edited all and when i came to compile it didnt work, i fixed it and now i get this error

Code:

[COLOR="Red"]Note: stream.java uses or overrides a deprectated API.
Note: Recompile With -Xlint: Deprecation for details.
Press any key to continue . . .[/COLOR]

And help on what i should do?

thanks