Reading this made me chuckle because there was Java developer in a "Ask HN" thread a few months back asking for advise after struggling to find work for several

Reading this made me chuckle because there was Java developer in a "Ask HN" thread a few months back asking for advise after struggling to find work for several months. The advice HN gave? Java is dead and he needed to reskill. I don't have much familiarity with F# (although everything I've heard has been very positive), but your comment basically sums up why corporates use and will continue to use Java – the ecosystem is extremely mature and battle tested. While it might not be as fancy or fun to work with, you know you're in safe hands which is extremely important when you have billions of dollars resting on the stability and security of your software. I'd even argue it's got little to do with the fact you have to spend time building things that comes out of the box with Java, and far more to do with the fact you can simply trust code that's been used by hundreds of fortune 500 orgs in production.