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D (Programming Language) VS Javalin

Compare D (Programming Language) VS Javalin and see what are their differences

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Contents:
  1. ยป Base Details
  2. ยป Videos
  3. ยป Reviews
  4. ยป Alternatives

D (Programming Language) logo D (Programming Language)

D is a language with C-like syntax and static typing.

Javalin logo Javalin

Simple REST APIs for Java and Kotlin
  • D (Programming Language) Landing page
    Landing page //
    2023-05-09
  • Javalin Landing page
    Landing page //
    2022-10-26

D (Programming Language) features and specs

  • Performance
    D is designed to be a high-performance systems programming language, offering performance comparable to C and C++ through native machine code compilation.
  • Expressiveness
    D features a rich standard library and modern language constructs, such as garbage collection, first-class arrays, and advanced templating, making it easier to write expressive and maintainable code.
  • Memory Safety
    D offers optional garbage collection along with manual memory management. This hybrid approach can help in developing safer applications by reducing memory-related errors.
  • Interoperability
    D can easily interoperate with C API, enabling seamless integration with existing C libraries and systems. It also supports better C++ interoperability compared to other languages.
  • Built-in Unit Testing
    D has built-in support for unit tests, allowing developers to write and run tests as part of the language itself, facilitating test-driven development.
  • Concurrency
    D offers built-in concurrency support with message passing, similar to the actor model found in languages like Erlang, making it easier to write concurrent and parallel programs.

Possible disadvantages of D (Programming Language)

  • Adoption
    D is not as widely adopted as other languages like C, C++, or Java. This limited adoption means fewer libraries, frameworks, and community support.
  • Toolchain Maturity
    While D's compilers and tools have improved over the years, they may still lack the maturity and feature set of more established languages, which can affect developer productivity.
  • Learning Curve
    D's richness and combination of paradigms (such as imperative, object-oriented, and functional programming) can present a steep learning curve for new developers.
  • Garbage Collection
    Although D offers optional garbage collection, its reliance on it for memory safety might be seen as a drawback for real-time system development where deterministic memory management is crucial.
  • Ecosystem
    The ecosystem for D is less vibrant compared to more popular languages, leading to potentially fewer third-party libraries, tools, and resources.
  • Standard Library Documentation
    The standard library documentation can be inconsistent or less comprehensive compared to other languages, making it difficult for developers to fully utilize all features of the language.

Javalin features and specs

  • Lightweight
    Javalin is a lightweight framework with minimal dependencies, making it easy to integrate into existing projects and reducing overhead.
  • Simplicity
    The framework is simple to use and has a straightforward API, which makes it easier for developers to understand and work with.
  • Kotlin & Java Support
    Javalin natively supports both Kotlin and Java, making it flexible for projects written in either language.
  • WebSocket Support
    It includes built-in support for WebSockets, enabling real-time communication between the client and server without additional dependencies.
  • Extensive Documentation
    Javalin comes with comprehensive documentation and guides, which help developers get up to speed quickly.

Possible disadvantages of Javalin

  • Limited Features
    As a minimalist framework, Javalin may lack some advanced features present in more comprehensive frameworks, requiring additional implementations from developers.
  • Community Support
    While growing, the community around Javalin is not as large as other established frameworks, which may result in fewer resources or third-party libraries.
  • Performance Overhead
    Though lightweight, Javalin may not offer the same level of performance optimization as frameworks specifically designed for high-performance use cases.
  • Limited Middleware
    Compared to other frameworks, the middleware support in Javalin is more limited, potentially requiring additional code for customization.

Analysis of D (Programming Language)

Overall verdict

  • Overall, D is a solid programming language choice that balances performance with productivity. It may not be as widely adopted as some other languages, but it has a dedicated community and continues to evolve, making it a viable option for various programming tasks.

Why this product is good

  • The D programming language is considered good by many developers for various reasons. It combines the performance and low-level control of C/C++ with the expressive power and ease of use found in modern languages. D offers features like garbage collection, first-class functions, and compile-time function execution, providing both speed and flexibility. Its interoperability with C, the convenience of a powerful standard library (Phobos), and the availability of packages via the DUB package manager make it a practical choice for systems programming, application development, and rapid prototyping.

Recommended for

  • System programming enthusiasts looking for an alternative to C/C++
  • Developers interested in writing high-performance applications
  • Programmers who appreciate modern language features and strong community support
  • Projects requiring seamless C integration
  • Individuals looking for a language that supports easy code maintenance and scalability

D (Programming Language) videos

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D Language Tutorial

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Category Popularity

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User comments

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Social recommendations and mentions

Based on our record, D (Programming Language) should be more popular than Javalin. It has been mentiond 60 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

D (Programming Language) mentions (60)

  • Ask HN: What is your (AI) dev tech stack / workflow? (June 2026)
    I've spent 2 weeks (2-4h per day) to make D language[1] version of Sciter SDK [2] Choice of AI "tooling" was by accident - typed something like "how to define copy constructor in D for custom structure" in Microsoft's Copilot in Edge browser that gives context for AI. The answer was good enough for me and so I went with it further. [1] D language HQ : https://dlang.org/. - Source: Hacker News / 2 months ago
  • Rue: Higher level than Rust, lower level than Go
    > Mostly, I am not really trying to compete with C/C++/Rust on speed, but I'm not going to add a GC either. So I'm somewhere in there. Out of curiosity, how would you compare the goals of Rue with something like D[0] or one of the ML-based languages such as OCaml[1]? 0 - https://dlang.org/ 1 - https://ocaml.org/. - Source: Hacker News / 8 months ago
  • Pony: An actor-model, capabilities-secure, high-performance programming language
    The D language home page has something similar with a drop down with code examples https://dlang.org/. - Source: Hacker News / about 1 year ago
  • Show HN: D++lang โ€“ A new systems programming language with Python-like syntax
    What is this? There's a lot of red flags here. * The name "D" for a programming language was taken in 1999: https://dlang.org/. - Source: Hacker News / about 1 year ago
  • Koto Programming Language
    >For me the biggest gap in programming languages is a rust like language with a garbage collector, instead of a borrow checker. I cannot agree more that's the much needed sweet spot/Goldilock/etc. Personally I have been advocating this approach for some times. Apparently the language is already widely available and currently has stable and wide compiler support including the venerable GNU compiler suite (GDC). It... - Source: Hacker News / over 1 year ago
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Javalin mentions (37)

  • Java 26 Is Here, and with It a Solid Foundation for the Future
    Helidon SE (https://helidon.io/#se) or Javalin (https://javalin.io/) would be more in that vein - straight-forward modern Java, super fast. - Source: Hacker News / 5 months ago
  • Year After Switching from Java to Go: Our Experiences
    But Javas has so many of these web frameworks?! * Spring (https://spring.io/) * Spring Boot (https://spring.io/projects/spring-boot) * Helidon (https://helidon.io/) * Micronaut (https://micronaut.io/) * Quarkus (https://quarkus.io/) * JHipster (https://www.jhipster.tech/) * Vaadin (https://vaadin.com/) That's just to mention the bigger ones, there's lots of mini frameworks like Javalin (https://javalin.io/) and... - Source: Hacker News / over 1 year ago
  • Latudio โ€“ a language acquisition app with a listening-oriented approach
    - like Sentences exercise, but you can select your own set of sentences. You can also set goals and view statistics about your progress. None of this would be possible without the great help from hundreds of our contributors [3], who translated, mapped and recorded content. All the content you find in the app was reviewed multiple times by several people and recordings are made by native speakers. No story in the... - Source: Hacker News / over 1 year ago
  • Show HN: Donobu โ€“ Mac App for Web Automation and Testing
    - Javalin 6 for the web framework (https://javalin.io/). - Source: Hacker News / almost 2 years ago
  • Spark โ€“ A web micro framework for Java and Kotlin
    I'd recommend Javalin (https://javalin.io/) instead. Same idea, only executed better and it is actively maintained. - Source: Hacker News / over 2 years ago
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What are some alternatives?

When comparing D (Programming Language) and Javalin, you can also consider the following products

C++ - Has imperative, object-oriented and generic programming features, while also providing the facilities for low level memory manipulation

vert.x - From Wikipedia, the free encyclopedia

Nim (programming language) - The Nim programming language is a concise, fast programming language that compiles to C, C++ and JavaScript.

Micronaut Framework - Build modular easily testable microservice & serverless apps

V (programming language) - Simple, fast, safe, compiled language for developing maintainable software.

Spark Framework - Spark Framework is a simple and lightweight Java web framework built for rapid development.

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