Hi @annahernandez99,

If you are trying to get up to speed with building UI plugins please use the vSphere Client SDK and especially the Remote plugin development guide.

If you are more interested in the core vCenter API please use the vSphere Web Services SDK.

In terms of the actual library to use VMware supports only vim25.jar (official vSphere Web Service SDK deliverable). You can find one in the vSphere Client SDK jars (html-client-sdk\libs).

javijava.jar and vijava.jar are actually 3rd party libraries packaging the same APIs but not released by VMware. As such their backward compatibility with new versions of vSphere does not come out of the box.

Also keep in mind you should use only one of these libraries at a time as they might clash runtime.

Obviously, my recommendation is to use only vim25.jar.

Hope this helps.

Cheers,

Vladi