import javax.swing.*; import java.awt.*;
public class Pann
{	public static void main(String[] args) 
	{	JFrame finestra = new JFrame("Vai");
		finestra.setDefaultCloseOperation
			(JFrame.DISPOSE_ON_CLOSE); 
		finestra.setSize(200, 150);
		Container c = finestra.getContentPane();
		JPanel  pannello = new JPanel();
		pannello.setBackground(Color.red); 
		JLabel la = new JLabel("Uno");
		la.setForeground(Color.yellow); pannello.add(la);
		JLabel lb = new JLabel("Due");
		lb.setForeground(Color.green); pannello.add(lb);
		c.add(pannello);
		finestra.setVisible(true); 
	}
}