I'm an IT student and I should choose between four optional subjects on my college. Is worth choosing two iOS/Swift subjects over one from Java and one from AngularJS? I've heard on internet that Java is semi-dead language due to its low popularity, so I'm interested in wheather is it still in demand on the market. Also worth noticing is that I already have C# subject as mandatory and would choosing Java too be redundant because I heard that Java and C# are very similar? And finally, what is demand on the market over Swift language?