JCMAN error

User 08c3042b5d

02-09-2010 01:48:41

Hi there,


Good day!


I am a new chemaxon user. I tried using the jchemmanager but, receive the following error message,


 Exception in thread “main” java.lang.UnsupportedClassVersionError:


 I have attached the snapshot of the error.  I have also installed the JVM but, could not understand why i receive this error.


Immediate support would be highly appreciated.


Thanks,


Subha

ChemAxon aa7c50abf8

02-09-2010 07:25:52

Hi Subha,


You're using a Java version earlier than Java 5. JChem requires Java 5 or later.


Regards,


Peter

User 08c3042b5d

02-09-2010 07:33:23

Hi Peter,


I have the java 6 update 21 installed in my system.But, still i receive the same error.Is there anything specific i need to do after updating java?


Thanks,


Subha 

ChemAxon aa7c50abf8

02-09-2010 07:49:37

Either remove earlier Java versions from your system or make sure that the parent directory of java(w).exe of the Java 6 version (C:\Program Files\Java\jdk1.6.0_20\bin on my system) comes first in the PATH environment variable.


(On my system I set JAVA_HOME to C:\Program Files\Java\jdk1.6.0_20 and my account's PATH variable starts with %JAVA_HOME%\bin.)


Regards,


Peter

User 08c3042b5d

06-09-2010 08:31:09

Hi Peter,


Good Day!


Sorry for the trouble,but, i have checked everything you have mentioned, JAVA_HOME set to C:\Program Files\Java\jdk1.6.0_21 and the PATH environment variable is placed second, after the JAVA_HOME user variable.


 I did check the jcman.bat and found that the last line is  set JVMPATH=%z%, Do i need to make any alterations in that?


Thanks,


Subha


 


 

User c1ce6b3d19

06-09-2010 13:59:27

Subha,


We would like to confirm what java version the JCMAN application is trying to use.


After starting jcman.bat, there is a command window with the error (as shown in your first post).  After you receive this error, can you please type "java -version" into this same command window and tell us the result.


 


Thanks,


Jonathan Lee


 

User 08c3042b5d

07-09-2010 02:04:57

Hi Jonathan Lee,


Good day!


It says java version "1.4.2_06"


Java<TM> 2 Runtine Environment, Standard Edition <build 1.4.2_06-b03>


Java HotSpot<TM> Client VM <build 1.4.2_06-b03, mixed mode>


Thanks,


Subha

User c1ce6b3d19

07-09-2010 08:19:43

Subha,


It looks like the version of java that is being used is a version of Java 4 (i.e. 1.4.2)


 


Your problem or similar problems have been solved before:


https://www.chemaxon.com/forum/viewpost15140.html


Please read the forum post and double check the paths on your PATH variable. One thing that I didn't understand from a previous post is


"the PATH environment variable is placed second, after the JAVA_HOME user variable".  


Perhaps explaining this part might help us further debug your issue.


If you would rather skip debugging your path problems, I might suggest downloading a JChem version that includes bundled Java.  You may find it here:


http://www.chemaxon.com/download/jchem/jchem-for-java/


Best Regards,


Jon

User 08c3042b5d

07-09-2010 08:37:38

Hi Jon,


Good Day!


Thanks for that. I have reinstalled jchem with java.It works now.


Thanks again and Best Regards,


Subha