Today I was solving an issue on different environments and I had to check the Java version being used in BEA Weblogic, IBM WebSphere and Apache Geronimo, it is not difficult but again I thought it would be useful to share it with everyone.
Here you can see how to check the Java version through the log in the Weblogic console:
In this case for WebSphere, you can see where to find the version by directly checking the log file:
The final screenshot is from Geronimo, with a lot of information about Java:
