initComponents();
// initialize handlers
app.getUIHandlers().setJavaHomeTextFieldHandler(new JavaHomeTextFieldHandler(javaHomeTextField));
app.getUIHandlers().setClasspathTreeHandler(new ClasspathTreeHandler(classpathTree));
app.getUIHandlers().setLookupButtonHandler(new LookupButtonhandler(lookupButton));
app.getUIHandlers().setLookupTextFieldHandler(new LookupTextFieldHandler(lookupTextField));
app.getUIHandlers().setResultTreeHandler(new ResultTreeHandler(resultTree));
// status bar initialization - message timeout, idle icon and busy animation, etc