Eclipse hover prompt
Use hover tips
The java editor contains different types of hover hints that provide additional information about the element the mouse pointer is pointing to. All relevant hover hints in the java editor can be configured through the Hovers page of the preference (type "hover" in the search box).
Move the mouse pointer over a class in the java editor, and the java documentation information related to the class will be displayed.
Move the mouse pointer over a method in the java editor to display the java documentation information related to the method.
