Author: [email protected]
Date: Tue Dec 16 15:36:17 2008
New Revision: 414
Modified:
site/learn/out-of-box-java.html
Log:
Issue 73 fixed
Modified: site/learn/out-of-box-java.html
==============================================================================
--- site/learn/out-of-box-java.html (original)
+++ site/learn/out-of-box-java.html Tue Dec 16 15:36:17 2008
@@ -256,20 +256,20 @@
</li>
</ol>
<h3>
- 3.3. Subclass PFrame
+ 3.3. Subclass JFrame
</h3>
<p class='preamble'>
- Next we will subclass the Piccolo2D class PFrame.
+ Next we will subclass the standard Swing class JFrame.
</p>
<ol>
<li>
Select your "Hello World" project and then choose File > New
> Class.
</li>
<li>
- Name the new class "HelloWorld".
+ Name the new class "HelloWorldExample".
</li>
<li>
- Choose the Superclass edu.umd.cs.piccolox.PFrame.
+ Choose the Superclass javax.swing.JFrame.
</li>
<li>
Check the box labeled "public static void main(String[] args)"
so that a main method will
@@ -287,31 +287,47 @@
</p>
<ol>
<li>
- At the top of the screen add the following import statement so
that we can use the PText
- class.
+ At the top of the screen add the following import statements so
that we can use the
+ PCanvas and PText classes.
<pre>
+import javax.swing.JFrame;
+
+import edu.umd.cs.piccolo.PCanvas;
import edu.umd.cs.piccolo.nodes.PText;
</pre>
</li>
<li>
- PFrame will call the "initialize" method when it is created.
This is a good place to add
- our Piccolo2D nodes, so override this method like this:
+ The contructor is used to initialize and wire up piccolo2d, so
create one like this:
<pre>
- public void initialize() {
- PText text = new PText("Hello World");
- getCanvas().getLayer().addChild(text);
+ private HelloWorldExample() {
+ final PCanvas canvas = new PCanvas();
+ final PText text = new PText("Hello World");
+ canvas.getLayer().addChild(text);
+ add(canvas);
+
+ setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+ setSize(600, 400);
+ setVisible(true);
}
-</pre>Last of all override main method so that a new instance of
your "HelloWorld" class gets
-created by main. The final code should look like this:
+</pre>Last of all override main method so that a new instance of
your "HelloWorldExample" class
+gets created by main. The final code should look like this:
<pre>
+import javax.swing.JFrame;
+
+import edu.umd.cs.piccolo.PCanvas;
import edu.umd.cs.piccolo.nodes.PText;
-import edu.umd.cs.piccolox.PFrame;
public class HelloWorldExample extends PFrame {
- public void initialize() {
- PText text = new PText("Hello World");
- getCanvas().getLayer().addChild(text);
+ private HelloWorldExample() {
+ final PCanvas canvas = new PCanvas();
+ final PText text = new PText("Hello World");
+ canvas.getLayer().addChild(text);
+ add(canvas);
+
+ setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+ setSize(600, 400);
+ setVisible(true);
}
public static void main(String[] args) {
@@ -331,7 +347,7 @@
</p>
<ol>
<li>
- Right-click on your "HelloWorld" class and choose Run As >
Java Application
+ Right-click on your "HelloWorldExample" class and choose Run As
> Java Application
</li>
<li>
You should see the text "Hello World"
--~--~---------~--~----~------------~-------~--~----~
Piccolo2D Developers Group: http://groups.google.com/group/piccolo2d-dev?hl=en
-~----------~----~----~----~------~----~------~--~---
