Groovy example from Ken Kousen, hit url using collection for params and display image in swing window

gistfile1.groovy

//useful Groovy example from SpringOne talk by Ken Kousen
//hit url using collection for params and display image in swing window

import java.awt.BorderLayout as BL
import javax.swing.WindowConstants as WC
import groovy.swing.SwingBuilder
import javax.swing.ImageIcon

def base = 'http://chart.apis.google.com/chart?'
def params  = [cht: 'p3', chs: '400x200', chd: 't:60,40', chl: 'Hello|World']
def url = base + params.collect { k, v -> "$k=$v" }.join('&')


SwingBuilder.build() {
    frame(title: 'Hello, world',
    visible: true, defaultCloseOperation : WC.EXIT_ON_CLOSE) {
        label(icon: new ImageIcon(url.toURL()), constraints: BL.CENTER)
    }.pack()
}