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Important: This document is part of the Legacy section of the ADC Reference Library. This information should not be used for new development.
Current information on this Reference Library topic can be found here:
Q: How can I tell what version of MRJ I am currently using?
A: There are a couple ways to determine what version of MRJ is active.
At run time you can look for the
Unfortunately, versions of MRJ prior to 2.2 EA2 have a security manager which does not allow un-trusted Applets to access this property, meaning there is no guaranteed runtime version checking available for Applets running under older versions of MRJ.
Alternatively, you can use the Get Info command in the Finder to look at the version information of the MRJLib file. The MRJLib file is located in the "MRJ Libraries" folder inside the "Extensions" folder of your active System Folder.
Keep in mind, however, that MRJ gets loaded using the normal Shared Library
loading methods. This means that if there is a copy of MRJ in the same folder as
the application using it, the application will find and use the MRJ in its folder
rather than the one in the System Folder. Using the
[Sep 27 1999]