Introducing Jakarta EE CDI: Contexts and Dependency Injection for Enterprise Java Development

© Luqman Saeed 2020

L. SaeedIntroducing Jakarta EE CDIhttps://doi.org/10.1007/978-1-4842-5642-8_3

3. What Is a Reference Implementation?

Luqman Saeed¹ 

(1)

Accra, Ghana

 

In the previous chapter, you learned what a JSR is. Recall that a JSR is an abstract request to the JCP that contains proposed additions to the Java technology platform.

Because it is abstract, you cannot run it. A JSR needs to have some form of implementation, or concrete realization, to be useful to end developers. That is where the concept of reference implementation comes in.

Every JSR must have a reference implementation, which is a concrete implementation of the specification contained in the JSR document. This is a requirement of the JCP. Every single JSR has a reference implementation ...