Your story (javac / java) was supported since day 1. You had a compiler (say, mcs or csc) that you could invoke manually, passing the input files (csc Hello.cs)

Your story (javac / java) was supported since day 1. You had a compiler (say, mcs or csc) that you could invoke manually, passing the input files (csc Hello.cs) and could run the result (either via 'mono Hello.exe' or just 'Hello.exe'). This is more like maven or leiningen I guess - you can build and run, manage dependencies, create projects. That said, I'm not up to date in the Java landscape.