this post was submitted on 06 Nov 2025
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Programming

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Make Your Java Code Null-Safe Without Rewriting (jplus.hashnode.dev)
submitted 3 days ago* (last edited 2 days ago) by justicecoder@programming.dev to c/programming@programming.dev
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JPlus is fully compatible with Java, offering modern language features like null safety, boilerplate code generation and other modern language features to reduce developer burden and maximize productivity.

Notably, there is currently no ‘superset’ language that keeps Java syntax almost intact while extending the language with features like null checks at the language level. JPlus aims to fill this gap, providing a language that existing Java developers can naturally learn and adopt.

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[–] justicecoder@programming.dev 1 points 3 days ago

AFAIK Kotlin and Java code can co-exist as source level. Never tried it though. I guess it depends on the end case scenario what to use.

JPlus retains almost all of Java’s syntax while providing conveniences like null checks, allowing Java developers to use it immediately without additional learning. In contrast, Kotlin can utilize Java classes but requires learning Kotlin syntax and its libraries, and it cannot use Java syntax directly or automatically guarantee null safety. Therefore, JPlus offers a distinct advantage over Kotlin.