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Comment by nobleach | Hacker News Reader

Java as a language is totally fine! It has everything one might need. The culture totally sucks. Oracle leads the march toward what is the "standard". Jersey is a great leap out of this.

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I consider Jersey to be a good example of what is wrong with Java. Annotation driven APIs don't really lend themselves to composability - sparkframework, vertx or ratpack are much better ways of building REST apis with Java 8.

Using the annotations could probably be done a different way, but it follows many of the popular micro-frameworks like Sinatra for Ruby, or Express for Node.js.

Java lacks higher-kinded parametric polymorphism.

Java also lacks the ability to say something like:

  class Foo<T> implements ISerializable iff T implements ISerializable

So you end up having to work only with T's that are serializable, or not having the instance for Foo.

Also, Java lacks type-classes.

Java also lacks lazy bindings, and many other useful features one might need.

In short, Java is still very far from having everything one might need...

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