I'm also very comfortable using struts (1,2) and spring, have been using it for a very long time. I think you should learn RoR (or Django) and then decide for

I'm also very comfortable using struts (1,2) and spring, have been using it for a very long time. I think you should learn RoR (or Django) and then decide for yourself. Keep in mind that we are in the middle of another 'change' in web development which lead us to two aspects: 1) Traditional web development: If you are building experiments or software that can change quickly due to some sort of pivoting, you should avoid Java at all costs. It takes way too much time to test/change things using Struts (even 2) or spring. 2) Using AngularJs, Ember et al: Java does great, just use Jersey and you will be fine. But, why not use Go? It is faster than using netty, it is something new (we all like shiny things). That's my two cents, have a great day!!!