Useful "ShortCuts" in the Eclipse

Shortcut	Description
	Shortcuts for opening files or Java artifacts.
Ctrl + Shift + R	Search dialog for resources, e.g. text files
Ctrl + Shift + T	Search dialog for Java Types
	Shortcuts to move, copy and delete lines.
Ctrl + Alt + Down	Copy line(s)
Alt + Down/UP	Move line(s) down/UP
Ctrl + D	Delete a line
	Shortcuts to comment java/xml file.
Ctrl + / or Ctrl + C	Comment/uncomment the current line or selected lines
Ctrl + Shift + / or \	Block Comment/uncomment
Alt + Shift + J	Generate Javadoc
	Shortcuts to Search  java/other file.
Ctrl + F6	Editable list of buffers
Ctrl + Shift + G	Find all occurrences
Ctrl + H, Ctrl + J	Local search, incremental search
Alt + Shift + R	Open resource
	Shortcuts to View hierarchy structure.
Ctrl + Space	Display the autocomplete list
F4	View class hierarchy
Ctrl + Alt + H	Show call hierarchy
F3 / Ctrl + F3	Go to the declaration of the method/class/variable
CTRL + M	Maximize current editor