I think he's confusing obsolete with mature. Java is far from the hot new thing, but it you want to do large scale stuff then you know it can do the job. And

I think he's confusing obsolete with mature. Java is far from the hot new thing, but it you want to do large scale stuff then you know it can do the job. And there is plenty of innovation happening in frameworks like Spring rather than the core language. It's once massive share of the job market is definitely dropping, but the jobs that remain are also some of the highest paid.