C4J - Contracts for Java

Add this URL to your Eclipse Installation to reach this solution's update site.

Mars (4.5), Luna (4.4), Kepler (4.3), Juno (4.2, 3.8), Previous to Juno (<=4.1), Neon (4.6), Oxygen (4.7), Photon (4.8), 2018-09 (4.9)

https://github.com/C4J-Team/C4J-Eclipse-Plugin/raw/master/update-site/

Learn more...
Solution Description

Contracts for Java (C4J
Contracts for Java (C4J) is a Contracts framework for Java 1.6 and later. The primary goal for C4J is ease of use. Contracts are about design and quality, aspects of programming that a lot programmers don't spend enough time and energy on.
Therefore a Contracts framework must be simple and painless to use. At the same time the framework must be powerful.
C4J is simple and powerful.

C4J-Eclipse-Plugin Feature List:
https://github.com/C4J-Team/C4J-Eclipse-Plugin

C4J-Website for general information:
http://c4j-team.github.io/C4J/

Your feedback is highly appreciated!

We are not going to try to convince any readers that Contracts are indeed a very powerful design and quality assurance technique, so if you are not already convinced of that, please follow the links above and you may be convinced to try this tool out! These are our favorites though:

  • Contracts consist of preconditions and postconditions, which are systematically defined method by method.
  • The class invariant ensures the DRY principle (Don't Repeat Yourself) for contracts by defining all those assertions, which must be fulfilled at any visible state of an object, only once.
  • Contracts can be linked to classes and interfaces.
  • Contracts are inherited by extending a class or by implementing an interface which is guarded by a contract.
  • To be able to define meaningful contracts you are forced to split lengthy methods into small, well defined, methods with a single responsibility.
  • As your contracts are checked at runtime, your classes are validated against the real usage of your application, not against some test cases that may not even be real use cases.
  • If you are dealing with legacy code that you are afraid of refactoring, external contracts are perfect to add to existing code with no risk involved.

C4J-Eclipse-Plugin Feature List:
https://github.com/C4J-Team/C4J-Eclipse-Plugin

C4J-Website for general information:
http://c4j-team.github.io/C4J/

Additional Details

Eclipse Versions: Mars (4.5), Luna (4.4), Kepler (4.3), Juno (4.2, 3.8), Previous to Juno (<=4.1), Neon (4.6), Oxygen (4.7), Photon (4.8), 2018-09 (4.9)

Platform Support: Windows, Mac

Organization Name: VKSI

Development Status: Production/Stable

Date Created: Friday, June 28, 2013 - 05:46

License: EPL

Date Updated: Monday, February 4, 2019 - 13:50

Submitted by: C4J VKSI

Date Ranking Installs Clickthroughs
July 2024 0/0 0 1
June 2024 595/681 2 13
May 2024 494/682 7 12
April 2024 543/687 5 12
March 2024 0/0 0 4
February 2024 554/687 4 6
January 2024 0/0 0 6
December 2023 656/671 1 9
November 2023 0/0 0 6
October 2023 613/673 2 7
September 2023 0/0 0 12
August 2023 0/0 0 13
View Data for all Listings

Unsuccessful Installs

Unsuccessful Installs in the last 7 Days: 0

Download last 500 errors (CSV)

Marketplace Drag to Install Button

By adding the following code below to your website you will be able to add an install button for C4J - Contracts for Java.

HTML Code:

Markdown Syntax:

Output:

Drag to your running Eclipse* workspace. *Requires Eclipse Marketplace Client