Reading the config from file from yaml pipelines Edited

[BHARATHKUREK]

In Jenkins we will be able to read the values from different format of files like , yaml, Json, property files. I want to understand how do we read from varies files.

Along with that i want to understand how do we read pom attributes for example

artifactid = readMavenPom().getArtifactId() 
and store the output into variable and access throughout the pipeline.

I know its 2 different question but the final out come is we are reading and storing the values in a variable.

Thanks in advance.