Zarf's Journal: Mind bending Groovy code

jwagon sent me these mind bending groovy class manipulations in a chat today:

#!/usr/bin/env groovy

class AA {
                def msg
                AA(something){ msg = something }
        }

def c = { a, b ->
  def x =a.newInstance(b)
  println x.msg
}

c(AA, "foo")

Or how about....

#!/usr/bin/env groovy
def m = java.lang.String
def n = m.newInstance("foo")
println n