I cannot answer this question, because I was never interesed in getting certified in Java or JEE.
The reason that I think a Spring exam might be more difficult, is because to know Spring you have to learn about design patterns specific to the framework and best practices when working with it. And also, you have to know Java.
girl power ... turns out to be about a hundred watts. But they seriuosly don't like being connected to the grid. Tiny ad: