In my opinion you should know Spring MVC ( or boot ) as a Java freelancer.
I'd also go with Spring because they have a huge market share and many projects require Spring knowledge.
By knowing Spring you are expanding the circle for possible clients.
Play/Dropwizard are nice frameworks but they don't bring you any value as a freelancer because nobody will require knowledge/experience in those frameworks.
I'd also go with Spring because they have a huge market share and many projects require Spring knowledge.
By knowing Spring you are expanding the circle for possible clients.
Play/Dropwizard are nice frameworks but they don't bring you any value as a freelancer because nobody will require knowledge/experience in those frameworks.