How to add Javadoc for a class in eclipse IDE

1. Go to Project Properties->Java Build Path -> Libraries  and Expand the library that you need to add     Java doc.

2. Click on ‘Javadoc location’ as shown in the image below and ‘edit’ it.

3. For spring framework I have given the URL as http://docs.spring.io/autorepo/docs/spring-framework/3.1.x/javadoc-api/.

Now the Javadoc is appearing in Eclipse IDE as below.