Javadoc on hover
When hovering on a Java element, the javadoc view, if you have it open, will show you the documentation for it. Below you can see the result when hovering on an IJavaProject (part of the Eclispe JDT).

When hovering on a Java element, the javadoc view, if you have it open, will show you the documentation for it. Below you can see the result when hovering on an IJavaProject (part of the Eclispe JDT).