// Init
ProgressIndicator progressIndicator = new ProgressIndicator();
PanelSlider panelSlider = new PanelSlider();

// Create component
Component[] components = new Component[]{new PanelTest(1), new PanelTest(2), new PanelTest(3)};

// Integrate panelslider and progressindicator
panelSlider.setSliderComponent(components);
progressIndicator.initSlider(panelSlider);

progressIndicator.previous();

progressIndicator.next();