Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

Java Client Applet - Incompatible Magic Value

Posted on 2010-08-18
4
Medium Priority
?
640 Views
Last Modified: 2012-08-13
Sometimes I ask my friends to try out my applet and some get in and it works FINE for them... and for others... they get this error ...

java.lang.ClassFormatError: Incompatible magic value 1008813135 in class file tileGen
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClassCond(Unknown Source)
	at java.lang.ClassLoader.defineClass(Unknown Source)
	at java.security.SecureClassLoader.defineClass(Unknown Source)
	at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source)
*	at java.lang.ClassLoader.loadClass(Unknown Source)
	at sun.plugin2.applet.Plugin2ClassLoader.loadCode(Unknown Source)
	at sun.plugin2.applet.Plugin2Manager.createApplet(Unknown Source)
	at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)

Open in new window


Maybe it's because I compiled with the latest version of java and the friends are used an outdated java? maybe? What do you think?

thanks.
0
Comment
Question by:UrbanTwitch
  • 2
  • 2
4 Comments
 
LVL 92

Accepted Solution

by:
objects earned 2000 total points
ID: 33471491
yes that error is caused by comiling for a later version of java than it is being run with
you can use the javac switchs -target -source to control what version class file is produced
0
 
LVL 5

Author Comment

by:UrbanTwitch
ID: 33471497
What would be a good version to compile at? 1.5?
0
 
LVL 92

Expert Comment

by:objects
ID: 33471506
actually that value suggests its a corrupt class file that is being used.
might be worth getting them to clear there java cache and reload the applet

> What would be a good version to compile at? 1.5?

1.5 is a good choice
to do that you need to make sure you're not using any 1.6 features.
0
 
LVL 5

Author Comment

by:UrbanTwitch
ID: 33471549
Well then, my tileGen probably is because my friend who had the error got another error... so yeah.. either update or don't play. thanks.
0

Featured Post

Free Tool: Subnet Calculator

The subnet calculator helps you design networks by taking an IP address and network mask and returning information such as network, broadcast address, and host range.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

In this post we will learn different types of Android Layout and some basics of an Android App.
In this post we will learn how to make Android Gesture Tutorial and give different functionality whenever a user Touch or Scroll android screen.
Viewers will learn about the regular for loop in Java and how to use it. Definition: Break the for loop down into 3 parts: Syntax when using for loops: Example using a for loop:
How to fix incompatible JVM issue while installing Eclipse While installing Eclipse in windows, got one error like above and unable to proceed with the installation. This video describes how to successfully install Eclipse. How to solve incompa…
Suggested Courses

971 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question