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 or vCOBOL 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 Files (x86)VeryantisCOBOL2012R1lib*; C:Program Files (x86)Javajdk1.6.0_26libtools.jar; C:Program Files (x86)Javajdk1.7.0_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"

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