Eclipse : commonly used shortcuts

  1) Ctrl + T for finding class even from jar
  2) Ctrl + R for finding any resource (file) including config xml files
  3) Ctrl + 1 for quick fix
  4) Ctrl + Shift + o for organize imports
  5) Ctrl + /  for commenting , uncommenting lines and blocks
  6) Ctrl + Shift + / for commenting ,uncommenting lines with block comment
  7) Ctrl + o for quick outline going quickly to method
  8) Selecting class and pressing F4 to see its Type hierarchy
  9) Alt + right and Alt + left  for going back and forth while editing.
  10) Ctrl + F4 or Ctrl + w  for closing current file
  11) Ctrl+Shirt+W  for closing all files.
  12) Alt + Shift + W for show in package explorer
  13) Ctrl + Shift + Up and down for navigating from member to member (variables and methods)
  14) Ctrl + l go to line
  15) Ctrl + k and Ctrl + Shift +K for find next/previous
  16) select text and press Ctrl + Shift + F for formatting.
  17) Ctrl + F for find , find/replace
  18) Ctrl + D to delete a line
  19) Ctrl + Q for going to last edited place
  20) Ctrl + T for toggling between super type and subtype
  21) Go to other open editors: Ctrl + E.
  22) Move to one problem (i.e.: error, warning) to the next (or previous) in a file: Ctrl + . for next, and Ctrl + , for previous problem
  23) Hop back and forth through the files you have visited: Alt + ← and Alt + →, respectively.
  24) Go to a type declaration: F3
  25) CTRL+Shift+G, which searches the workspace for references to the selected method or variable
  26) Ctrl+Shift+L to view listing
  27) Alt + Shift + j  to add javadoc at any place in java source file.
  28) CTRL+SHIFT+P to find closing brace. place the cursor at opening brace and use this.
  29) Alt+Shift+X, Q  to run Ant build file using keyboard shortcuts.
  30) Ctrl + Shift +F  for Autoformating.

Shortcuts related to source code insertion Eclipse: