Java VS J

Compare Java VS J and see what are their differences

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Java

A concurrent, class-based, object-oriented, language specifically designed to have as few implementation dependencies as possible

J

array language with functional core

Landing page //
2018-09-30

We recommend LibHunt Java for discovery and comparisons of trending Java projects.

Not present

Java features and specs

Platform Independence
Java is known for its portability across multiple platforms via the Java Virtual Machine (JVM). This means you can write code once and run it anywhere.
Large Standard Library
Java boasts a comprehensive standard library, which facilitates development by providing pre-built solutions for a wide array of programming tasks.
Robust and Secure
Java emphasizes strong memory management and has built-in security features, making it a reliable choice for applications requiring high levels of security.
Community Support
With a vast and active community, ample resources are available for learning and troubleshooting. Numerous libraries and frameworks are available due to its long-standing presence.
Performance
Modern Java versions offer performance that is generally very good for many applications, particularly server-side applications where the Just-In-Time (JIT) compiler can significantly optimize runtime performance.

Possible disadvantages of Java

Verbosity
Java's syntax can be verbose compared to newer languages, requiring more lines of code to accomplish the same tasks, which may reduce readability.
Memory Consumption
Java applications can be memory-intensive due to their reliance on the JVM, which can be a downside for resource-constrained environments.
Performance Overhead
Despite its generally good performance, Java's reliance on the JVM introduces some overhead compared to languages that compile to native machine code, such as C++.
No Low-Level Programming
Java abstracts away from the hardware, making it less suitable for low-level programming tasks that require direct hardware manipulation, such as embedded systems programming.
Slow Startup Time
Java applications can have slower startup times due to the overhead of JVM initialization, which can be a drawback for desktop applications or command-line tools that are frequently started and stopped.

J features and specs

Conciseness
J is known for its extremely concise code, allowing complex operations to be expressed in just a few characters. This can lead to significant reductions in code size and faster prototyping.
Array Programming
J is an array programming language, which makes it exceptionally powerful for mathematical and statistical operations. It allows operations to be performed on entire arrays without the need for explicit loops.
Interactive Environment
The J programming language features an interactive environment that facilitates experimentation and exploration of data and functions, making it suitable for data analysis and educational purposes.
Cross-Platform
J is designed to be cross-platform, with implementations available for various operating systems, which enhances its accessibility and usability across different platforms.
Extensive Libraries
J comes with extensive standard libraries that support a wide range of functionalities, including graphics, UI, and other utilities, enhancing its capabilities.

Possible disadvantages of J

Steep Learning Curve
The syntax of J is quite different from more conventional programming languages, which can make it difficult for new users to learn and adopt.
Niche Language
J is not as widely used as other programming languages, which means that there is a smaller community and fewer resources or libraries compared to more mainstream languages.
Readability Challenges
While J's conciseness is an advantage, it can also lead to code that is difficult to read and understand, especially for those who are not familiar with the language.
Limited Industry Adoption
J has limited adoption in the industry, which may result in fewer job opportunities for developers skilled in the language compared to other mainstream programming languages.
Performance Considerations
While J is efficient for array-based operations, it may not perform as well as lower-level languages in scenarios that require intensive computation and optimization.

Analysis of Java

Overall verdict

Java remains a strong and relevant choice for software development, particularly in enterprise environments. It is a mature language with ongoing support and updates, ensuring it remains viable and secure for modern applications.

Why this product is good

Java is a versatile and powerful programming language that has been used extensively for developing a wide range of applications. It is platform-independent due to its 'write once, run anywhere' capability, thanks to the Java Virtual Machine (JVM). Java is known for its robustness, extensive libraries, and strong community support, making it a reliable choice for developers.

Recommended for

Enterprise-level applications
Web applications
Android app development
Scientific and research projects
Big data technologies

Analysis of J

Overall verdict

J is a powerful, high-performance array programming language descended from APL, well-suited for those who value extreme conciseness, mathematical elegance, and speed in numerical and data-processing tasks, though its terse syntax presents a steep learning curve.

Why this product is good

Extremely concise syntax that allows complex operations to be expressed in very few characters
Array-oriented design makes it exceptionally efficient for vectorized and mathematical computations
Free and open-source with active community support and documentation
Fast execution due to its low-level, optimized interpreter
Rich built-in library for statistics, linear algebra, and data manipulation
Cross-platform availability (Windows, macOS, Linux)
Encourages a unique problem-solving mindset that can improve algorithmic thinking

Recommended for

Mathematicians and statisticians needing rapid prototyping of numerical algorithms
Data scientists working with large array or matrix computations
Enthusiasts of APL-family languages looking for a modern, refined alternative
Computer science educators teaching array programming concepts
Competitive programmers who enjoy concise code golf-style solutions
Researchers requiring high-performance computation without heavy language overhead

Java videos

+ Add

AP Computer Science in 10 Minutes (Java review)

J videos

+ Add

NOT a typical J. Crew review | ft. fabric, sewing and try-ons!

Category Popularity

0-100% (relative to Java and J)

J

Programming Language

96 96%

Programming Language

4% 4

OOP

95 95%

OOP

5% 5

Generic Programming Language

94 94%

Generic Programming Language

6% 6

Languages & Frameworks

100 100%

Languages & Frameworks

0% 0

User comments

Share your experience with using Java and J. For example, how are they different and which one is better?

Reviews

These are some of the external sources and on-site user reviews we've used to compare Java and J

Java Reviews

The 10 Best Programming Languages to Learn Today

If you want to build your career in IoT or big data, Java is arguably the best programming language to learn. Java is cross-platform compatible and offers portability and versatility to almost any type of device, making it ideal for IoT applications. The Apache Hadoop big data processing system is also written in Java.

Source: ict.gov.ge

Alternatives to Nmap: from simple to advanced network scanning

This tool can provide favorite IP address ranges, NetBIOS information and web server detection. More features can be added by installing Java plugins.

Source: www.networkworld.com

J Reviews

We have no reviews of J yet.
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Social recommendations and mentions

Java might be a bit more popular than J. We know about 7 links to it since March 2021 and only 5 links to J. 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.

Java mentions (7)

Can someone help with port forwarding?
You can use UPnP PortMapper. Source code/Download. All you need is Java and that's it. Hope this helps. Source: over 4 years ago
PolyGlot 3.5 Release
I would definitely suggest installing Java for this one, and the error should have asked you to do so. I'll have to look into why that was not popping properly for you and address it in a bug fix. In the mean time, you can address the issue by going here to install Java: https://java.com/en/. Source: over 4 years ago
i need help pls
Https://java.com/en/ Is this the java you're using to install optifine. When I first got optifine I thought java meant Minecraft and not java. Source: over 4 years ago
I keep getting this error when I try to install Worldpainter
I had this problem before just go to https://java.com/en/ and download the java then you will have to install the actual java, then after its installed go to This PC then Windows then Program Files then Java then go to the file name file name that show I think when you downloaded it then go into bin and you will find a java.exe file then click it and World Painter will install and that's who I solved king problem... Source: about 5 years ago
What to do immediately with a brand new build?
Java, Adobe Reader, Handbrake (great for converting and adjusting videos). Source: about 5 years ago

J mentions (5)

Thinking in an Array Language
This is based on K. Another array language is J http://jsoftware.com In J this would be:
```
   dot =: +/ . *.
```
- Source: Hacker News / over 2 years ago
How do you Programm with esoteric languages?
Does J count a "esoteric"? If so, I do directly write J code, interactively. It's often a sort of exploration, a dialogue with the interpreter. J's conciseness makes that quite pleasant. Source: over 2 years ago
I Completed All 8 Advents of Code in One Go: Here Are the Lessons I Learned.
Sure. Advent_of_Code (AoC) is a computer programming competition that’s been running since 2015. Problems are released daily from 1 December for 24 days. That’s the Advent thing. Each registrant gets their own data and has to write a program that produces a matching solution unique to their data usually a single number. You get a star if you get the correct answer. There is a ranking based on how long from release... Source: over 3 years ago
Solving Wordle with APL
I started learning APL in 1974 and J about twenty years later. I think you’ll find J (https://jsoftware.com) will be easy to pickup. You have the APL idioms down pat. I have to relearn them as I don’t use either much these days. Source: over 4 years ago
Array programming language(s) for 3d-graphics?
I like J, from jsoftware.com. They came up with a genius way of representing all primitives with ascii characters combined with periods or colons (a couple of exceptions). If you download and install, go to the demos and labs to see 3D graphic implementations and all sorts of other examples of capabilities. Source: almost 5 years ago

What are some alternatives?

When comparing Java and J, you can also consider the following products

Python - Python is a clear and powerful object-oriented programming language, comparable to Perl, Ruby, Scheme, or Java.

JavaScript - Lightweight, interpreted, object-oriented language with first-class functions

Haskell - An advanced purely-functional programming language

PHP - A popular general-purpose scripting language that is especially suited to web development

Clojure - Clojure is a dynamic, general-purpose programming language, combining the approachability and interactive development of a scripting language with an efficient and robust infrastructure for multithreaded programming.

Rust - A safe, concurrent, practical language