Agree with this, except I think C# is better than Java. I write everything in C#: desktop apps, mobile apps, frontend, backend

I think the language is very similar to Java but some advantages present themselves 1.it has more modern features than Java, 2. it has mobile (including IOS) and frontend support 3. (possibly not true, but my impression anyway) it has better support for writing close the metal, high performance code

It really is very nice to write everything in the same language.