Groovy

   1 class X{
   2   int amount
   3 }
   4 
   5 def x = new X()
   6 x.amount = 1
   7 println("${x.amount}")

   1 import groovy.swing.SwingBuilder
   2 import java.awt.BorderLayout as BL
   3 
   4 count = 0
   5 
   6 def actionPerformedFn(){
   7   count++; 
   8   textlabel.text = "Clicked ${count} time(s)."
   9   println "clicked"
  10 }
  11 
  12 def quitFn(){
  13   System.exit(0) 
  14 }
  15 
  16 new SwingBuilder().edt {
  17   frame(title: 'Frame', size: [300, 300], show: true) {
  18     borderLayout()
  19     textlabel = label(text: 'Click the button!', constraints: BL.NORTH)
  20     button(text:'Click Me', actionPerformed: {actionPerformedFn()}, constraints:BL.WEST)
  21     button(text:'Quit', actionPerformed: {quitFn()}, constraints:BL.EAST)
  22   }
  23 }