Eclipse editor show variable occurrence

Question

In Eclipse Standard Installation the editor marks all occurrences of a variable if you click on it with a cursor.

e.g. Setting the cursor somewhere on the \'foo\' Variab

Answer 1

You are asking about the "Toggle Mark Occurrences" the short cut for this is Alt + Shift + O

Answer 2

You can also enable it from

Window > Preferences > Java > Editor > Mark Occurrences