JPlus is a modern programming language and compiler that acts as a superset of Java — bringing the benefits of null safety and powerful boilderplate code generation declarative features while remaining fully interoperable with existing Java code and libraries.

Null-pointer exceptions are a common error in Java, causing inconvenience for many developers. Preventing null pointer exceptions in advance is important, but for developers who want to focus solely on logic, handling them can be tedious. Moreover, it’s not always easy to account for every scenario. Typically, static analysis tools are used to detect potential null pointer issues, but developers still have to find and fix the code themselves. JPlus reduces that burden. Let’s write null-safe Java code with JPlus.

Hi everybody, this is the JPlus development team.

JPlus is a Java superset programming language, extending standard Java syntax with additional features. So far, we have introduced null-safety and boilerplate code generation features. Currently, we are planning to add Named Parameter support to JPlus. This feature allows specifying parameter names explicitly when calling methods or constructors.

The point we would like to discuss is whether to support Default Values.

Option A: Named Parameter only

• Pros: Simpler syntax, minimal implementation and learning overhead

• Cons: Call sites may become longer in some situations

Option B: Named Parameter + Default Value

• Pros: More concise code, allows omitting some arguments when calling

• Cons: Can make code slightly harder to read if too many defaults are used

We would like to gather opinions on whether default values are truly necessary in practical coding scenarios.

If you want to learn more about JPlus, please refer to the links below:

• JPlus Github Repository: https://github.com/nieuwmijnleven/JPlus
• Make Your Java Code Null-Safe Without Rewriting
• Try apply in JPlus with built-in boilerplate elimination

This post is a “promotional” message regarding support for the JPlus project. If such posts make you uncomfortable, please feel free to skip reading this.

I am currently working full-time on a project called JPlus(https://github.com/nieuwmijnleven/JPlus) which is a fully Java-compatible superset language offering modern safety and expressiveness. With JPlus, you can enhance your Java code’s safety and expressiveness without rewriting it, while fully leveraging existing Java libraries and tools.

Personally, I believe this project is a truly great idea and can bring significant benefits to the Java developer community.

Below is an article on how to provide null‑safety to Java code without rewriting the code, by using JPlus and the JPlus IntelliJ Plugin. Making your Java code null-safe without rewriting

Since the moment I came up with the idea, I have devoted all my time to developing JPlus. To be honest, I am about to reach a financial limit. To be even more candid, my financial situation was already dire when I started this project, but I believed that this project could be my lifeline. Because of that belief, I invested all my time and managed to release the MVP version of JPlus and the IntelliJ Plugin within a short period.

I am not asking for a large amount. Having already lost almost everything, completing a meaningful project like JPlus has become my ultimate goal. If 20 or more people could contribute just $1–2 per month each, I would be able to survive minimally while continuing development.

I used to think that nobody would find themselves in such a difficult personal situation in today’s world, but experiencing it firsthand has been an unexpected reality.

I want to continue working full-time on JPlus, but my funds will run out in just a few days, which is why I am writing this post.

If this message makes anyone feel uncomfortable, I sincerely apologize once again. That said, if you find this project interesting or believe it could help the Java community, even a small contribution would mean a great deal.

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Null-pointer exceptions are a common error in Java, causing inconvenience for many developers. Preventing null pointer exceptions in advance is important, but for developers who want to focus solely on logic, handling them can be tedious. Moreover, it’s not always easy to account for every scenario. Typically, static analysis tools are used to detect potential null pointer issues, but developers still have to find and fix the code themselves. JPlus reduces that burden. Let’s write null-safe Java code with JPlus.

JPlus is a modern programming language and compiler that acts as a superset of Java — bringing the benefits of null safety and powerful boilderplate code generation declarative features while remaining fully interoperable with existing Java code and libraries.

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.

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.

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.