How to add a title to a JFrame descendent

Question

Hi. I have created a class that extends the JFrame class. What I would like to do is put a title on the window. How do I do that?
Must I create another constructor to accept the string? Currently, all I have defined is a no-parameter constructor.
Should I use super. somehow? My constructor looks as follows:
public Rectangle()
// Set up the Grid layout
mainGrid = new GridLayout(6, 2);
// Add the layout to the container
container = getContentPane();
container.setLayout (mainGrid);
//Create Length Label
labLength = new JLabel("Length: ");
labLength.setHorizontalAlignment(JLabel.RIGHT);
container.add(labLength);
// Create Length TextField
txtLength = new JTextField("1.0", 5);
container.add(txtLength);
// Create Width Label
labWidth = new JLabel("Width: ");
labWidth.setHorizontalAlignment(JLabel.RIGHT);
container.add(labWidth);
// Create Area TextField
txtArea = new JTextField(5);
txtArea.setEditable (false);
container.add(txtArea);
setSize(400,150);
setVisible(true);
} // end constructor method
Thanks for any help you can offer.

Answer 1

Yeah, you can make another constructor that takes a String as an argument then calls super(String)
public Rectangle(String title)
super(title); // calls the JFrame constructor
Rectangle(); // calls your no argument constructor
or use the setTitle(String) metod to set it some other time if you want.