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Java applet
Hello,
I have a problem when I try to implement java applet to a web page. Web page keeps saying :
NoClassDefFoundError. Can anyone help me with this?
here is a html code:
HTML Code:<header> <body> <applet code = "Calculator.class" width=300 height=250 /> </body> </header>
Related threads:
Re: Java applet
Don't add the .class part. It's like when you run a Java class file, you don't say "java ClassName.class" - you just do "java ClassName".
Recommended reading: Deploying With the Applet Tag (The Java™ Tutorials > Deployment > Java Applets)
Useful links: How to Ask Questions the Smart Way | Use Code Tags | Java Tutorials
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ikocijan (June 29th, 2012)
Re: Java applet
Please post the full text of the error message so we know what the full problem is.
If you don't understand my answer, don't ignore it, ask a question.
ikocijan (July 3rd, 2012)
Re: Java applet
Removing .class didn`t help.
when I launch .html file chrome should display my calculator (eclipse displays it as an applet). I attached screen shoot. hope that helps.error.JPG
Re: Java applet
If your class is in a package, you must include the package name with the class name.
See the error message for the full classname that includes the packagename.
I can't select and copy from an image so you will have to see the full name for yourself.
If you don't understand my answer, don't ignore it, ask a question.
ikocijan (June 29th, 2012)
Re: Java applet
do you mean something like this:I tried that and I got error: ClassNotFoundExceptionHTML Code:<applet code = "com/PracticalJava/Lesson10/Calculator" width=300 height=250 />
I made a simple program so that I am sure that everything works(used default package):
public class HelloWorld extends JApplet { public void paint (Graphics g){ g.drawString ("Hello World", 50, 100); } }
and then I made a html:
Everthing works in Ecplise but Chrome shows ClassNotFoundException:HTML Code:<html> <body> <applet code = "HelloWorld" width=300 height=250/> </body> </html>
error.JPG
I tried with HelloWorld.class and only HelloWorld
Re: Java applet
Please copy the full text of the error message and paste it there.I got error: ClassNotFoundException
You can get the error message from the browser's java console.
I can not copy text from an image to show what the problem is.
If you don't understand my answer, don't ignore it, ask a question.
ikocijan (July 3rd, 2012)
Re: Java applet
Well that is going to be a problem because I can not copy anything from that window. In chrome when I launch web page only that window pop- up and if I press Details it opens Java consoe. If I press Ignore program still won`t load and if I press Reload window pop- up again. I wish I could give you more but that is the only thing that happens.Originally Posted by Norm
Re: Java applet
Please read the tutorial I posted, it addresses all of your issues. Hint: how do you separate packages?
Useful links: How to Ask Questions the Smart Way | Use Code Tags | Java Tutorials
Static Void Games - Play indie games, learn from game tutorials and source code, upload your own games!
ikocijan (June 30th, 2012)
Re: Java applet
The Java console has a button for copying its contents.if I press Details it opens Java console
If you don't understand my answer, don't ignore it, ask a question.
ikocijan (June 30th, 2012)
Re: Java applet
Thank you for your replies. I will read the tutorial later today and try java console.
Re: Java applet
I read all about creating and working with jar files and now everything works. Thank you guys for wasting your time on my problem
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