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Java Card - unsupported class file format of version 50.0.
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POLAT
Posts:65
Registered: 7/14/08
unsupported class file format of version 50.0.   
Jul 18, 2008 1:13 AM
 
 
Hi,

I have trouble witjh this message : error: wallet.Wallet: unsupported class file format of version 50.0.

I am using these configuration: Eclipse Version: 3.3.2, eclipse-jcde 1.0`s plugin into eclipse plugin directory and java_card_kit-2_2_2. So, I use EclipseJCDE(i just installed and do the commands given in this site( http://eclipse-jcde.sourceforge.net/ ), not done anything more). i can build the Wallet applet( http://rapidshare.com/files/130573511/Wallet.rar.html ). When I use "Java Card" menu item and select "Convert". This error message is sent to console window of eclipse ide.

What can be the reason(s)?
 
POLAT
Posts:65
Registered: 7/14/08
Re: unsupported class file format of version 50.0.   
Jul 18, 2008 3:05 AM (reply 1 of 5)  (In reply to original post )
 
 
Here are the fotos that shows the my environment and flow of process. I have not found the source of error, yet. Good lucks to me :)
http://rapidshare.com/files/130591117/errors_fotos.rar.html
 
POLAT
Posts:65
Registered: 7/14/08
Re: unsupported class file format of version 50.0.   
Jul 18, 2008 3:28 AM (reply 2 of 5)  (In reply to #1 )
 
 
Hi,

Again me :).

When I change the jdk version from Project Properties to 1.3, I do not take any message like this but. When I click Convert item from Java Card Menu item.

i got a message like that:

Java Card 2.2.2 Script Generator, Version 1.3
Copyright 2005 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms.
Missing component: 4
APDU script file for CAP file download generated.

Is it a big problem for us the clause colored with red ?????? Help who knows anything about this, please?
 
doananhtai
Posts:1
Registered: 7/30/08
Re: unsupported class file format of version 50.0.   
Jul 30, 2008 2:01 AM (reply 3 of 5)  (In reply to original post )
 
 
I have the same "unsupported class file format of version 50.0. " problem with eclipse Version: 3.3.2, eclipse-jcde 0.1 and java_card_kit-2_2_2.

I try to use eclipse 3.4 and also get "unsupported class file format of version 50.0. "

After all, I try to download and use eclipse 3.2 (I saw 3.2.2 but dare not to try)
.... and how wonderful is it, I can convert, generate script, deploy and doing any thing.

I hope this will help for any newbie like me.
 
Amit_D30
Posts:85
Registered: 7/17/08
Re: unsupported class file format of version 50.0.   
Jul 31, 2008 3:23 AM (reply 4 of 5)  (In reply to #3 )
 
 
This is java version error please check the version of your java and the version available with java_card_kit.
I think 1.5 works with java_card_2.2.2.
 
bsibar
Posts:9
Registered: 10/31/09
Re: unsupported class file format of version 50.0.   
Oct 31, 2009 1:17 AM (reply 5 of 5)  (In reply to #2 )
 
 
I have same problems with polat. I use javacard_development_kit 2.2.2 and java version is 1.5

I got a same massage with POLAT:
Missing component: 4
APDU script file for CAP file download generated.

Did anyone solve this problem?

Edited by: bsibar on Oct 31, 2009 1:17 AM
 
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