Java definitely requires modernisation, but main one lies not in the language itself, but rather in the ways and approaches we're using to create applications. Lightweight frameworks, reactive design, compile-time reflection, functional style, exception-less processing and much more - all these things will affect Java ecosystem far more than any new language feature.
Unfortunately, existing libs (including java standard library) and widely used frameworks rarely support this style of programming, so switching to it will be much harder and longer than adding some new feature to language itself.
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Java definitely requires modernisation, but main one lies not in the language itself, but rather in the ways and approaches we're using to create applications. Lightweight frameworks, reactive design, compile-time reflection, functional style, exception-less processing and much more - all these things will affect Java ecosystem far more than any new language feature.
Unfortunately, existing libs (including java standard library) and widely used frameworks rarely support this style of programming, so switching to it will be much harder and longer than adding some new feature to language itself.