javax.swing.JFrame;
javax.swing.JButton;

class Program01 extends JFrame
{
	JButton gomb1 = new JButton("Klikk");
	Program01
	{
		add(gomb1);
		pack;
		setDefaultCloseOperation(1);
		setVisible(true);
	}
	public static void main(String[] args)
	{
		new Program01();
	}
}