Spark is a

free and open-source software Free and open-source software (FOSS) is a term used to refer to groups of software consisting of both free software and open-source software where anyone is freely licensed to use, copy, study, and change the software in any way, and the source ...

web application framework and

domain-specific language A domain-specific language (DSL) is a computer language specialized to a particular application domain. This is in contrast to a general-purpose language (GPL), which is broadly applicable across domains. There are a wide variety of DSLs, ranging f ...

written in

Java Java (; id, Jawa, ; jv, ꦗꦮ; su, ) is one of the Greater Sunda Islands in Indonesia. It is bordered by the Indian Ocean to the south and the Java Sea to the north. With a population of 151.6 million people, Java is the world's List ...

. It is an alternative to other Java web application frameworks such as

JAX-RS Jakarta RESTful Web Services, (JAX-RS; formerly Java API for RESTful Web Services) is a Jakarta EE API specification that provides support in creating web services according to the Representational State Transfer (REST) architectural pattern. ...

Play framework Play Framework is an open-source software, open-source web application framework which follows the model–view–controller (MVC) architectural pattern (computer science), architectural pattern. It is written in Scala (programming language), Sc ...

and

Spring MVC Spring(s) may refer to: Common uses * Spring (season), a season of the year * Spring (device), a mechanical device that stores energy * Spring (hydrology), a natural source of water * Spring (mathematics), a geometric surface in the shape of a he ...

. It runs on an embedded

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web server by default, but can be configured to run on other webservers. Inspired by Sinatra, it does not follow the

model–view–controller Model–view–controller (MVC) is a software architectural pattern commonly used for developing user interfaces that divide the related program logic into three interconnected elements. This is done to separate internal representations of infor ...

pattern used in other frameworks, such as Spring MVC. Instead, Spark is intended for "quickly creating web-applications in Java with minimal effort." Spark was created and open-sourced in 2011 by Per Wendel, and was completely rewritten for version 2 in 2014. The rewrite was hugely centered on the Java 8 lambda philosophy, so Java 7 is officially not supported in version 2 and above.

Example (Hello World)

import static spark.Spark.*; public class HelloWorld

Supported template engines

Spark supports these template engines:Views and Templates - Documentation - Spark Framework: An expressive web framework for Kotlin and Java
/ref> * Apache Velocity * FreeMarker * Mustache * Handlebars
Jade
* Thymeleaf *Pebble
Water
*jTwig *Jinjava
Jetbrick

References

External links

*{{Official website, https://sparkjava.com/
Spark's GitHub repository
Free software Java platform software Web frameworks