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NTNUJAVA Virtual Physics Laboratory
Enjoy the fun of physics with simulations!
Backup site http://enjoy.phy.ntnu.edu.tw/ntnujava/ > Easy Java Simulations (2001- ) > Information and Download > ejrconsole not running
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Author Topic: ejrconsole not running  (Read 12890 times)
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migulati@rediffmail.com
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on: August 19, 2006, 04:39:55 pm »

I have unziped the ejr file. But the ejrconsole file does not run. Can anybody help me at

migulati@rediffmail.com.
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Fu-Kwun Hwang
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Reply #1 on: April 08, 2007, 11:24:26 pm »
If you download Latest version of Ejs
Installation Procedure: Please make sure you have at least java run time installed.

  1. Unzip downloded file to any directory in your computer (for example:c:\) It will create a new subdirectory: Ejs
  2. Double Click Ejs/EjsConsole.jar to run it!

Please let me know the message shown on your screen. Otherwise, I would not be able to help!
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Ka-lolek
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Reply #2 on: July 28, 2007, 10:51:11 pm »
Hello Sir,
When I doubleclick EjsConsole.jar, console screen shows up and immediately disappears. There is error:
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error in thread "main" java.lang.NoClassDefFoundError: C:\Ejs\EjsConsole/jar

What should I do to repair it?
Greetings
Ka-lolek
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Fu-Kwun Hwang
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Reply #3 on: July 29, 2007, 08:54:00 pm »
I just download the same file and check it with my machine. It is working fine.
Please make sure you have install the Java Run Time on your machine.
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Ka-lolek
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Reply #4 on: July 29, 2007, 09:21:25 pm »
I ensured...It's properly installed.
To prove it I checked whether I can run EjsConsole.jar from cmd console
I wrote java -jar EjsConsole.jar and everything is working well.
I don't know what is reason of it, but I'm working on it.
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Fu-Kwun Hwang
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Reply #5 on: July 29, 2007, 10:12:13 pm »
Do you mean if you type "java -jar EjsConsole.jar" and it is working well. And it is not working when you double click EjsConsole.jar?
Then it is something wrong in your setting? Not the Ejs distribution.
You can create a  bat file to run "java -jar EjsConsole.jar". Ejs was running that way.
Now, we can run ejs by double click EjsConsole.jar

I did not have the same problem as you have. So I do not know how to help now.

If you find out how to make it work, please post it here! Thank you!
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Ka-lolek
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Reply #6 on: July 30, 2007, 03:39:10 am »
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Do you mean if you type "java -jar EjsConsole.jar" and it is working well. And it is not working when you double click EjsConsole.jar?
Exacktly
Quote
Then it is something wrong in your setting? Not the Ejs distribution.
I think so also. But I've never told that there is sth wrong with Ejs. Now I know that there is sth wrong with my java properties
Quote
You can create a  bat file to run "java -jar EjsConsole.jar". Ejs was running that way.
Now, we can run ejs by double click EjsConsole.jar
Thanks, it's working. But I will try to solve my problem in spite of it Smiley
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If you find out how to make it work, please post it here! Thank you!
Certainly, I will !

Greetings
Ka-lolek
« Last Edit: July 30, 2007, 03:48:54 am by Ka-lolek » Logged
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Discovery consists of seeing what everybody has seen and thinking what nobody has thought. ..."Albert von Szent-Gyorgyi(1893-1986, 1937 Nobel Prize for Medicine, Lived to 93)"
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