How to change default text file encoding in Eclipse?

Question

Window -> Preferences -> General -> Workspace : Text file encoding

Nanda's answer wasn't enough in my setup. What I needed to do is:

• Window > Preferences > General > Content Types
• Select Text > HTML in the tree
• Select all file associations, particularly .html
• Input "UTF-8" in the text-field "default encoding"

For eclipse Mars:

Change Workspace Encoding:

Check a file Encoding:

Preferences >> General >> Editors >> Text editors >> Spelling: Enconding

P.S.: Eclipse Indigo and Juno.