applets in package

**dabdi** · June 14th, 2011, 06:36 PM

I am learning applets and am having a problem (I am sure is very simple for most of you).
Whenever i put the applet in a namespace (package), i can't run it.

package javaboard; /*without this it works*/
 
import java.applet.*;
import java.awt.*;
 
public class AppletBoard extends Applet {
	public void paint(Graphics g){
		g.drawString("Hello World!",200,100);
	}
}

I tried to create a jar file and modify the class name in the html file but it doesn't work.
Also before jarring, it didn't work. What am I missing ?

How do you modify this html

<html> 
 <applet code="AppletBoard.class" height="300" width="320">
 </applet>
 </html>

**copeg** · June 14th, 2011, 06:59 PM

Make sure the directory structure that your code resides parallels the package structure you have created. Further, when you package an app into a jar you need to maintain this structure.

**Norm** · June 14th, 2011, 07:04 PM

That also applies to the code= attribute. It should refer to the package and class. For example:
... code=javaboard.AppletBoard ...

Leave off the .class as that is not part of the class name.

**dabdi** · June 14th, 2011, 07:35 PM

Originally Posted by Norm

That also applies to the code= attribute. It should refer to the package and class. For example:
... code=javaboard.AppletBoard ...

Leave off the .class as that is not part of the class name.

Thanks for your suggestions. I was using the prefix "javaboard." when testing the jars and it worked as long
as I didnt put the package javaboard; namespace. But I did not try removing .class extension.
So far I am having no luck both with and without jarring. Here is my directory structure and error message before jarring

 Directory of C:\Users\Daniel\Desktop\test\javaboard
 
06/14/2011  08:25 PM    <DIR>          .
06/14/2011  08:25 PM    <DIR>          ..
06/14/2011  08:25 PM               385 AppletBoard.class
06/14/2011  08:22 PM                92 AppletBoard.html
06/14/2011  07:29 PM               191 AppletBoard.java
               3 File(s)            668 bytes
               2 Dir(s)  71,459,155,968 bytes free
 
C:\Users\Daniel\Desktop\test\javaboard>appletviewer AppletBoard.html
load: class javaboard.AppletBoard not found.
java.lang.ClassNotFoundException: javaboard.AppletBoard
        at sun.applet.AppletClassLoader.findClass(AppletClassLoader.java:211)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
        at sun.applet.AppletClassLoader.loadClass(AppletClassLoader.java:144)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
        at sun.applet.AppletClassLoader.loadCode(AppletClassLoader.java:662)
        at sun.applet.AppletPanel.createApplet(AppletPanel.java:785)
        at sun.applet.AppletPanel.runLoader(AppletPanel.java:714)
        at sun.applet.AppletPanel.run(AppletPanel.java:368)
        at java.lang.Thread.run(Thread.java:662)

**Norm** · June 14th, 2011, 07:54 PM

With the package path, the HTML file should be in the test folder. The browser will look in the javaboard folder for the AppletBoard.class file.

**dabdi** · June 14th, 2011, 08:04 PM

Thanks a lot! It works now. So easy when you know ...

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