[piccolo2d-dev] [piccolo2d commit] r414 - site/learn

[codesite-noreply]

Author: mr0...@mro.name
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 &gt; New  
&gt; 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 &gt;  
Java Application
+          Right-click on your "HelloWorldExample" class and choose Run As  
&gt; Java Application
          </li>
          <li>
            You should see the text "Hello World"

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Piccolo2D Developers Group: http://groups.google.com/group/piccolo2d-dev?hl=en
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