[Yanel-dev] Figuring out the java version number of a java class file

Michael Wechner michael.wechner at wyona.com
Thu Nov 19 12:42:27 CET 2009


Hi

Sometimes one has forward compatibility issues with Java. For example 
because a resource is built with Java 1.6 (version 50.0), but
the system itself is being build with Java 1.5 (version 49.0)

In order to check what version a java class file has one can execute on 
Linux/UNIX the following command:


file MyFile.class

and then it should say something like

MyFile.class: compiled with Java class data, version 49.0

HTH

Michi


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