PanelViewer

public class PanelViewer {

    public static void main(String[] args) {
        JFrame frame = new JFrame("Gui Test");

        frame.getContentPane().setLayout(new FlowLayout());
        //frame.add(new PerspectivePanel());

        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.pack();
        frame.setVisible(true);
    }
}