This might have nothing to do with Java and everything with your company. Maybe you are attracting boring people because the company presents itself as a place

This might have nothing to do with Java and everything with your company. Maybe you are attracting boring people because the company presents itself as a place for such people. Maybe the company has a reputation or a vibe that simply does not attract the kind of people you are looking for. Maybe job openings are worded in such a way that they attract these kind of people.