JSF correct use of jsf-api dependency - maven

Question

Ok, I am a little confused on the differences between jsf-api implementations.
<dependency>
<groupId>com.sun.faces</groupId>
<artifactId>jsf-api</artifactId>
<version>2.2.8</version>
</dependency>
<dependency>
<groupId>javax.faces</groupId>
<artifactId>jsf-api</artifactId>
<version>2.1</version>
</dependency>
I am not sure what the differences are between these two. I thought they do the same thing and allow the javax.faces imports but now I have confused myself. Can anyone please explain these two differences? Thanks :)

Answer 1

There was somes changes with the groupId of the Maven JSF-API dependency since the first version. For JSF 2.2 (current version as I'm writing this), you should use the following recommended dependency, if you are running in a container supporting JSF:
<dependency>
<groupId>javax.faces</groupId>
<artifactId>javax.faces-api</artifactId>
<version>2.2</version>
<scope>provided</scope>
</dependency>
If your container does not support JSF (like Tomcat), use the following dependency if you want to use Mojarra (the default JSF implementation):
<dependency>
<groupId>org.glassfish</groupId>
<artifactId>javax.faces</artifactId>
<version>2.2.8</version>
</dependency>
Other recommmendation and information are available on the official page of JSF.