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

You could specify the online Javadoc location for a particular JAR in Eclipse. This saved my day when I wasn't able to find any downloadable Javadocs for Kafka.

1. In the Package Explorer, right click on the intended JAR (under the project's Referenced Libraries or Maven Dependences or anything as such) and click on Properties.
2. Click on Javadoc Location.
3. In the Javadoc location path field under Javadoc URL, enter the URL of the online Javadocs, which most likely ends with //javadoc/. For example, Kafka 2.3.0's Javadocs are located at http://www.apache.org/dist/kafka/2.3.0/javadoc/ (you might want to change https to http in your URL, as it raised an invalid location warning after clicking on Validate... for me).