1. CS431 ws99 Half Text Half Graphics
4/8/2019
Applications in Java 1.2
Half Text
Half Graphics
CSTP FS99
CS423 (cotter)
<title>

2. Swing Components Defined in package javax.swing
CS431 ws99
4/8/2019
Swing Components
Defined in package javax.swing
Pure Java components
AWT components tied to local platform GUI
UNIX java windows look like X windows
Windows java windows look like windows windows (??)
etc.
Swing defines a common look and feel for Java.
CSTP FS99
CS423 (cotter)
<title>

3. Swing Components Derive from awt classes
CS431 ws99
4/8/2019
Swing Components
Derive from awt classes
java.lang.Object -> java.awt.Component ->
jav.awt.Container -> javax.swing.Jcomponent
Methods overloaded in swing to allow different behaviour
CSTP FS99
CS423 (cotter)
<title>

4. Product.java / From Java: How to Program - Deitel and Deitel
CS431 ws99
4/8/2019
Product.java
/ From Java: How to Program - Deitel and Deitel
// Calculate the product of three integers
import javax.swing.JOptionPane;
public class Product {
public static void main( String args[] ) {
int x, y, z, result;
String xVal, yVal, zVal;
xVal = JOptionPane.showInputDialog(
"Enter first integer:" );
yVal = JOptionPane.showInputDialog(
"Enter second integer:" );
zVal = JOptionPane.showInputDialog(
"Enter third integer:" );
CSTP FS99
CS423 (cotter)
<title>

5. Product.java x = Integer.parseInt( xVal );
CS431 ws99
4/8/2019
Product.java
x = Integer.parseInt( xVal );
y = Integer.parseInt( yVal );
z = Integer.parseInt( zVal );
result = x * y * z;
JOptionPane.showMessageDialog( null,
"The product is " + result );
System.exit( 0 ); }
CSTP FS99
CS423 (cotter)
<title>

6. Product Output(s) CSTP FS99 CS423 (cotter) CS431 ws99 4/8/2019
<title>

7. JOptionPane Similar to windows message boxes Types of Option Panes:
CS431 ws99
4/8/2019
JOptionPane
Similar to windows message boxes
Types of Option Panes:
showConfirmDialog(null,message,title,optionType,msgType);
Asks a confirming question, like yes/no/cancel.
showInputDialog(message);
Prompt for some input.
showMessageDialog(null, message);
Tell the user about something that has happened.
showOptionDialog(....);
The Grand Unification of the above
three.
CSTP FS99
CS423 (cotter)
<title>

8. OptionType DEFAULT_OPTION YES_NO_OPTION YES_NO_CANCEL_OPTION
CS431 ws99
4/8/2019
OptionType
DEFAULT_OPTION
YES_NO_OPTION
YES_NO_CANCEL_OPTION
OK_CANCEL_OPTION
CSTP FS99
CS423 (cotter)
<title>

9. messageType ERROR_MESSAGE INFORMATION_MESSAGE WARNING_MESSAGE
CS431 ws99
4/8/2019
messageType
ERROR_MESSAGE
INFORMATION_MESSAGE
WARNING_MESSAGE
QUESTION_MESSAGE
PLAIN_MESSAGE
CSTP FS99
CS423 (cotter)
<title>