I thought that JPMS doesn't support module version. However, when I do java --list-modules I have the following output:
java.activation@9
java.base@9
java.compiler@9
java.corba@9
java.datatransfer@9
java.desktop@9
java.instrument@9
....
So, I can't understand what this @9 is. Is this version or what? If JPMS supports module version, can I set in module-info of module A, that module A requires module B of certain version?
I can't understand what this @9 is. Is this version or what?
Yes, it is the version of the module.
If JPMS supports module version, can I set in module-info of module A, that module A requires module B of certain version?
No, you cannot refer a specific version of a module in another module's declaration. I believe this was always clearly mentioned in The State of the Module System#Module Declarations
A module’s declaration does not include a version string, nor constraints upon the version strings of the modules upon which it depends. This is intentional as it is not a goal of the module system to solve the version-selection problem, which is best left to build tools and container applications.