How to attach source or JavaDoc in eclipse for any jar file e.g. JavaFX?

Question

Presently I\'m working with JavaFX. Whenever I hover over a method of JavaFX its gives me the following error:

\'Note: This element neither has attached sourc

Answer 1

If you are using maven just do:

mvn eclipse:eclipse -DdownloadSources=true  -DdownloadJavadocs=true