# Objective-J

> programming language developed as part of the Cappuccino web development framework

**Wikidata**: [Q1443431](https://www.wikidata.org/wiki/Q1443431)  
**Source**: https://4ort.xyz/entity/objective-j

## Summary
Objective-J is a programming language developed as part of the Cappuccino web development framework. Created in 2008, it is an object-based language influenced by Objective-C. It supports multiple programming paradigms, including object-oriented, functional, and imperative programming, utilizing a dynamic and weak typing discipline.

## Key Facts
- **Inception:** 2008.
- **Primary Classification:** Programming language and object-based language.
- **Influenced By:** Objective-C.
- **License:** GNU Lesser General Public License.
- **Official Website:** http://www.cappuccino-project.org/
- **Typing Discipline:** Duck typing, dynamic typing, and weak typing.
- **Programming Paradigms:** Object-oriented programming, reflective programming, functional programming, and imperative programming.
- **File Formats:** Objective-J source code file (readable and writable).
- **Copyright Status:** Copyrighted.

## FAQs
### Q: What is Objective-J used for?
A: Objective-J is used as part of the Cappuccino web development framework. It functions as a language for communicating instructions to a machine within this specific environment.

### Q: How does Objective-J relate to Objective-C?
A: Objective-J is influenced by Objective-C, a high-level, object-oriented programming language originally developed in 1984. While they share influences, Objective-J is distinct and developed specifically for the Cappuccino framework.

### Q: What are the typing characteristics of Objective-J?
A: Objective-J utilizes duck typing, dynamic typing, and weak typing. This means type checking is often performed at runtime, and the language is flexible regarding how types are enforced.

## Why It Matters
Objective-J serves as a specialized tool within the Cappuccino web development ecosystem, bridging concepts from established desktop programming languages into web development. By adapting the syntax and paradigms of Objective-C—a language widely known for its use in macOS and iOS development—for the web, Objective-J provided a unique approach to building rich internet applications. Its existence allowed developers familiar with Objective-C to leverage their knowledge within a browser environment.

The language is significant for its implementation of multiple programming paradigms, including object-oriented, functional, and reflective programming, all within a dynamically typed system. This flexibility allowed for the creation of complex front-end architectures using the Cappuccino framework. Released under the GNU Lesser General Public License, it contributed to the open-source ecosystem, offering an alternative to the dominant JavaScript-centric methodologies of its time. Its development in 2008 marked a specific moment in web engineering history where developers sought to bring rigorous desktop application patterns to the web browser.

## Notable For
- **Unique Lineage:** It is a programming language directly influenced by Objective-C, adapting desktop development paradigms for the web.
- **Paradigm Versatility:** It supports a wide array of programming paradigms, including object-oriented, functional, imperative, and reflective programming.
- **Cappuccino Integration:** It was developed specifically as a component of the Cappuccino web development framework.
- **Flexible Typing:** It employs a distinct combination of duck, dynamic, and weak typing disciplines.

## Body

### Development and Context
Objective-J was developed in 2008 as a core component of the Cappuccino web development framework. It is classified strictly as a programming language and an object-based language. The language is copyrighted and was released under the GNU Lesser General Public License. Its creation was driven by the need for a robust development framework that mirrored the capabilities of desktop application development environments.

### Language Design and Influences
The syntax and structure of Objective-J are heavily influenced by Objective-C, a general-purpose, high-level, object-oriented programming language dating back to 1984. Unlike strictly typed languages, Objective-J employs a flexible typing discipline characterized by:
- **Duck Typing:** Where an object's suitability is determined by the presence of methods and properties, rather than its type.
- **Dynamic Typing:** Where type checking is performed at runtime.
- **Weak Typing:** Where the language allows for implicit type conversions.

### Technical Specifications
Objective-J supports multiple programming paradigms, allowing developers to utilize object-oriented programming, reflective programming, functional programming, and imperative programming styles.

The technical handling of the language involves specific file formats known as "Objective-J source code file," which are used for both reading and writing code. The official portal for the language and the framework is hosted at `http://www.cappuccino-project.org/`. The language's presence is documented across several Wikipedia language editions, including Czech, French, Armenian, Russian, Thai, Turkish, and Ukrainian.

## References

1. Freebase Data Dumps. 2013
2. Quora