Java reigns supreme because there is nothing which come close to its characteristics in terms of capabilities, libraries supports, tooling, performances, easiness to learn, simplicity and maturity.
If you want faster or lower level, you gotta move to C++, which is uber-hardcore in terms of non-simplicity and impossible-to-learn.
If you want easier, you gotta move to python/ruby/node.js, which are a joke in terms of performance and concurrency, with the last 2 being fairly young and immature (< 10 years).
Either way, the tooling sucks compared to Java, if not entirely non existent.
Entreprisey development is on Java because that's what best for them. Web development is on something else because they pick what's cool and trendy.
If you want faster or lower level, you gotta move to C++, which is uber-hardcore in terms of non-simplicity and impossible-to-learn.
If you want easier, you gotta move to python/ruby/node.js, which are a joke in terms of performance and concurrency, with the last 2 being fairly young and immature (< 10 years).
Either way, the tooling sucks compared to Java, if not entirely non existent.
Entreprisey development is on Java because that's what best for them. Web development is on something else because they pick what's cool and trendy.