Scala/gtjambi show system properties

    class ShowProperties(parent : QWidget) extends QScrollArea(parent) {
        private val formLayout  = new QFormLayout
        private val propsWidget = new QWidget
        private val props       = System.getProperties

        private val keys        = props.keys

        while (keys.hasMoreElements) {
            val key = keys.nextElement

            formLayout.addRow(key.toString, new QLabel(props.get(key).toString))
        }

        propsWidget.setLayout(formLayout)
        setWidget(propsWidget)
        resize(500, 400)
        setWindowTitle("System Properties")
    }