• Components/Widgets:
  • The parts of a GUI (e.g., buttons, sliders, text fields)
• Containers:
  • "Screen real estate" that contains components/widgets

• JFrame :
  • A main "window" most commonly used by an application
• JApplet :
  • Most commonly a portion of a WWW page (displayed in a browser)

javaexamples/gui/JFrameDriver.java

        import java.awt.*;
import javax.swing.*;


/**
 * An example that uses a JFrame
 *
 * @version 1.0
 * @author  Prof. David Bernstein, James Madison Univeristy
 */
public class JFrameDriver
{

    /**
     * The entry point of the example
     *
     * @param args   The command line arguments
     */
    public static void main(String[] args)
    {
        JFrame   f;


        f = new JFrame();
        f.setSize(400,400);
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);        
        f.setVisible(true);
    }
}
        

• The JRootPane :
  • JRootPaneContainer objects have a JRootPane that manages layers (if any), menus (if any), and content
  • Should not be used
• The Content Pane:
  • A JRootPane has a Container called the content pane that manages all of the usable "screen real estate"
  • Accessed using the getContentPane() method

• JButton :
  • 
• JCheckBox /JRadioButton :
  • 
• JTextField /JTextArea :
  • 
• JComboBox :
  • 
• JSlider :
  • 

• Organizing GUI components
• Grouping GUI components
• Positioning GUI components