import javax.swing.JFrame;
import javax.swing.JLabel;
import java.awt.Color;
import java.awt.Container;

public class SecondWindow extends JFrame
{
    public static final int WIDTH = 200;
    public static final int HEIGHT = 200;

    public SecondWindow( )
    {
        super( );

        setSize(WIDTH, HEIGHT);

        Container contentPane = getContentPane( );
        JLabel label = new JLabel("Now available in color!");
        contentPane.add(label);

        setTitle("Second Window");
        contentPane.setBackground(Color.BLUE);

        addWindowListener(new WindowDestroyer( ));
    }

    public SecondWindow(Color customColor)
    {
        super( );

        setSize(WIDTH, HEIGHT);

        Container contentPane = getContentPane( );
        JLabel label = new JLabel("Now available in color!");
        contentPane.add(label);

        setTitle("Second Window");
        contentPane.setBackground(customColor);

        addWindowListener(new WindowDestroyer( ));
    }
}