1. Designing a User Interface with Swing
Assignment Swing:
Update code of an earlier program

2. Swing: Part of the Java Foundational Classes JDK1.2
Expanded components
Better event handling
Selectable look & Feel
Extends AWT

3. Benefits of Swing Swing provides for a different Look & Feel
Metal is the name of new interface in Java
All Components Compatibility (www…)
All Components written in Java(not so earlier)
import java.awt.swing.*; OR
javax.swing in Beta 4 (and up)

4. An Applications Framework
FRAMEWORK.JAVA
Just provides a frame (no components)
SWINGER.JAVA
A button “I receive a disproportionate amount of pleasure from being clicked. Please interact with me.”
Jframe NEW term “ an intermediate container called the content pane”

5. Jframe subdivided into panes
Create Jframe
Jframe frame = new Swinger( );
Add all components (use add(Component))
pane.add(hotbutton)
Make the Jpanel
Jpanel pane = new Jpanel( );

6. Working with Swing NEW TERM icon http://www.prefect.com/java21
(.gif files added to the icon
ImageIcon una = new ImageIcon(“unabom.gif”);

7. Swing Labels Jlabel(String , int) Buttons “
TextFields JTextArea(int , int)
TextAreas “
Check Boxes and Radio Buttons
Choice Lists “
Scrollbars JScrollBar( int , int, int, int, int)

8. SwingColorTest An “old” program revisited & Updated
It is the “old” Hue Saturation & Brightness OR
R G B
All done with Swing

9. New Swing UI manager A Swing Layout manager/ user-interface manager
Windows 95 or NT Look & Feel Motif X-Window, Metal, Swing’s cross platform “ “
try { UIManager.setLookAndFeel(
UIManager.getCrossPlatformLookAndFeelClassname( )); } catch(Exception e) { System.err.println(“Can’t set look and feel: + e;}

10. Keyboard Mnemonics A key Accelerator
purpose (without a mouse) - use control keys in combination with other keys to function instead of mouse
Jbutton infoButton = new Jbutton(“Info”)’
infoButton.setMnemonic(‘I’);
Pressing Alt+ I causes “InfoButton” click

11. It’s ToolTime with Tim Allen Kidding … ToolTips
JScrollBar seed = JScrollBar( );
Speed.setToolTip ( “Move to set animation speed”);
limit ToolTip ONLY one line long

12. Component Descriptions & Names
1. Get AssessibleContext( ) method on the component
2. Call setAcccessibleDescription(String) method on that AccessibleContext object
The string argument should be the component’s text description

13. Standard Dialog Boxes
Like Visual BASIC “Windows” that ask a small/simple question, warn, or provide message
ConfirmDialog = Y/N Cancel
InputDialog = prompt input
MessageDialog = message
OptionDialog = All of the above

14. Example
Int response;
response = JOptionPane.showConfirmDialog(null, “Should I delete all your irreplaceable personal files”);
MORE figures/code demo. Use of Dialog Boxes

15. INFO.JAVA
Last example of complete program in chapter. Uses Dialog boxes - Swing