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java.lang.NoClassDefFoundError

schworak
schworak asked
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Last Modified: 2012-08-13
I would offer more points, but I am low at this point. Sorry!

Anyway, this is my first time working with java applets. I am using Anfy java fire aplet. It work great when viewing it locally off my hard drive through netscape. I uploaded the files I was told to upload to my web server and the app fails. I get the error "Applet fire error: java.lang.NoClassDefFoundError: fire" and I have no idea what that means. If you want to see the page it is on it is at www.g-world.com/ccrc.html
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Commented:
Did you upload a file called fire.class to the server too?  If not, you probably need to.
For using the classes in a browser you will have to group them up and add a parameter in the applet html file . For Netscape browser you will have to package the classes in to a JAR file and add archive=xx.jar in the applet's html file . You can see more details on the following URL

http://java.sun.com/products/jdk/1.1/docs/guide/jar/index.html

For Internet Explorer you will have to package as a CAB file .

Author

Commented:
Just sticking the applets into a jar didn't do me any good. It doesn't seem logical to stick all the unrelated applets into a single download file anyway does it?

Author

Commented:
Does the java applet need to be downloaded every time it is accessed on various pages? Or does it download and sit some place on the hard drive waiting for the next call? I have all the applets on the hard drive then I uploaded them to the server as instructed by the help file in the anfy collection. The odd part seems to be that the applets work when the html is on the hard drive but not when it is on the server. I don't understand.
Michel PlungjanIT Expert
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Top Expert 2009

Commented:
What java version?

With Java 1.2b4 sun suddenly decided to split the classes.zip into tools.jar and jre/rt.jar
If you run from your harddisk perhaps the classes are found and from the web, they're not.

Are you using the same pc?

Michel
Hi,  I have been to your site and found that you have the following error . Do you know if there is a directory called "my-java" in your webserver's documents directory ? Is the file "Lware.class" right in the directory "my-java" ??? Let the experts here know and hopefully your problem will be solved.

java.io.FileNotFoundException: www.g-world.com:80//my-java/Lware.class
java.lang.NoClassDefFoundError: Lware
      at fire.init
      at com/ms/applet/AppletPanel.securedCall0
      at com/ms/applet/AppletPanel.securedCall
      at com/ms/applet/AppletPanel.processSentEvent
      at com/ms/applet/AppletPanel.processSentEvent
      at com/ms/applet/AppletPanel.run
      at java/lang/Thread.run


On the previous note about Jar files I was asking to package all related classes not other applet classes . If fire.class is calling Lware.class then these should be in one jar file.
Commented:
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Author

Commented:
Now I feel like a dope! Thanks so much for catching that for me. Stupid windows! Changed the case of the file name.
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