Why do I get a warning "major version 51 is newer than 50"?

Question ID : 192
Created on 2012-03-20 at 10:15 PM
Author : Veryant Support [support@veryant.com]

Online URL : http://support.veryant.com/support/phpkb/question.php?ID=192


After installing isCOBOL 2020R1 or earlier with JDK 7 you may get a compiler warning such as the following: 


warning: javalangObject.class(javalang:Object.class): major version 51 is newer than 50, the highest major version supported by this compiler.
This happens when there is a tools.jar file from JDK 6 in CLASSPATH before the one from JDK 7.
For example, if you installed isCOBOL with JDK 6 and then installed it with JDK 7, your user CLASSPATH setting might be as follows: 
C:Program FilesVeryantisCOBOL2012R1lib*; C:Program FilesJavajdk1.6.0_26libtools.jar; C:Program FilesJavajdk1.7.0_03libtools.jar
To fix this problem:
  1. Launch the control panel
  2. Edit the system environment variables (e.g. In Windows 7 search for "environment variables" or go to "System and Security > System > Advanced system settings" and click on Environment Variables)
  3. Double-click on CLASSPATH and delete the path to the JDK 6 version of tools.jar in both "User variables" and "System variables
NOTE:
The tools.jar does not need to be in the classpath in version 2020 R2 and above, so you should not get the message in these versions.


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