void256/nifty-gui — pull request #232 by Alchemist0823 (2014-05-22 03:13:36+00:00)
Title: Resolved UnsupportedOperation Exception

Collections.unmodifiableMap(kerning)

getKerning returns a unmodifiableMap but your code modifies it.

(AngelFontCode:160) info.getKerning().put((char) second, amount);
UnsupportedOperation Exception