// A first application that makes use of GApp
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class FirstApp extends JPanel
{
  private JLabel  lbl = new JLabel("Hi there");
  private JButton btn = new JButton("Hide it");

  public FirstApp()
  {
    btn.addActionListener(new ActionListener()
    {
      public void actionPerformed(ActionEvent ae)
      {
        if (lbl.isVisible())
        {
          lbl.setVisible(false);
          btn.setLabel("Show it");
        }
        else
        {
          lbl.setVisible(true);
          btn.setLabel("Hide it");
        }
      }
    });
    add(lbl);
    add(btn);
  }

  public static void main(String[] args)
  {
    FirstApp fa = new FirstApp();
    GApp app = new GApp("The First App", fa);
    app.setSize(250, 100);
    app.show();
  }
}