UUID generator

gistfile1.groovy

import groovy.swing.SwingBuilder
import java.awt.BorderLayout as BL
import java.awt.datatransfer.Clipboard
import java.awt.datatransfer.StringSelection
import java.awt.Toolkit
import javax.swing.*

class UUIDgenerator {
    def readIcon() {
        byte[] iconBytes = new byte[990]
		def stream = this.getClass().getClassLoader().getResourceAsStream('barcode.gif')
		assert stream : 'Icon not found!'
		// read icon
		stream.read(iconBytes)
		def imageIcon = new ImageIcon(iconBytes)
    }
    def start() {
        def icon = readIcon().image
        def window = SwingBuilder.build {
            frame(title:'UUID generator', size:[300,250], location:[300,300], pack: true, show: true, defaultCloseOperation:JFrame.EXIT_ON_CLOSE, iconImage:icon, resizable: false) {
            borderLayout()
            scrollPane(constraints: BL.NORTH) {
                textlabel = textArea(rows:10,columns:40,text:"", autoscrolls:true)
            }
            button(text:'Generate',
                 actionPerformed: {String uuid = UUID.randomUUID().toString();
                  textlabel.text+=uuid + '\n';
                 StringSelection stringSelection = new StringSelection( uuid );
            Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
            clipboard.setContents( stringSelection, null );},
                 constraints:BL.SOUTH)
          }
        }
    }
    
    
    public static void main(String[] args){
        new UUIDgenerator().start()
    }
}