Empty.java uses or overrides a deprecated API.

[MatthijsKamstra]

I tried to build empty.hxml with

• OSX 10.11.4
• Haxe Compiler 3.3.0 - (C)2005-2016 Haxe Foundation

and got this

haxe empty.hxml 
haxelib run hxjava hxjava_build.txt --haxe-version 3300 --feature-level 1
javac "-sourcepath" "src" "-d" "obj" "-g:none" "-classpath" "./lib/core.jar:./lib/gluegen-rt.jar:./lib/jogl-all.jar:./lib/gluegen-rt-natives-macosx-universal.jar:./lib/jogl-all-natives-macosx-universal.jar" "@cmd"
Note: src/haxe/root/Empty.java uses or overrides a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
demo/Empty.hx:7: lines 7-23 : Warning : Type java.Char16 is being cast to the unrelated type Float