Thanks so much, that fixed it. Yes I am using OSX. I found this link below, installed the file and the buils was sucessfull.
If you want to upgrade to version Java 3D 1.5, you can download this installer: http://create.ife.no/vr/tools/j3d/java3d_1_5_2-macosx.pkg.zip
In terminal I typed "gradlew setupDecompWorkspace eclipse" all goes well until. Forge is the latest. I ran MC 1.8 just before doing this. Recently updated JDK
:recompileMc
[ant:javac] warning: [options] bootstrap class path not set in conjunction with -source 1.6
[ant:javac] /Users/haroldzintel/Desktop/forge/forge/build/tmp/recompileMc/sources/net/minecraftforge/client/model/obj/OBJModel.java:616: error: cannot find symbol
[ant:javac] material.getColor().setW(alpha);
[ant:javac] ^
[ant:javac] symbol: method setW(float)