Why is Grails using an old JVM compiler on Mac OS x 7?

Why is Grails using an old JVM compiler on Mac OS x 7?

References

Reference NO 1

http://stackoverflow.com/questions/15201703/why-is-grails-using-an-old-jvm-compiler-on-mac-os-x-7

Reference NO 2

http://stackoverflow.com/questions/17742273/how-do-i-check-grails-is-installed-on-a-mac-os

Reference NO 3

http://grails.org/doc/latest/guide/gettingStarted.html

Reference NO 4

http://code.google.com/p/grails-jaxrs/issues/detail?id=74

Reference NO 5

http://raibledesigns.com/rd/search?cat=Java&q=sidenote

Reference NO 6

http://static.springsource.org/sts/nan/v320/NewAndNoteworthy.html

Reference NO 7

#EANF#

Reference NO 8

#EANF#