Can someone tell me why Java seems so to have developed into this kind of chaos? It isn't just enterprise java, has anyone looked at the Apache java projects la

Can someone tell me why Java seems so to have developed into this kind of chaos? It isn't just enterprise java, has anyone looked at the Apache java projects lately? Tens of thousands of lines of dependency xml (that often doesn't even work because of incompatible common dependencies), three different built systems (ivy, ant and maven), abstraction for classes that have just a single concrete version, dependencies that are old and no longer supported (I'm looking at you Apache Gora). Hell, find the download link on most Apache java project sites. Now find the one for the source repository. What madness has infected Java developers? (Sadly, I've recently had to start doing a bunch of big data work with hadoop, possibly the most fractured and poorly documented open source project ever created)