Eclipse - Declare variable based on return or get (Shortcut)

I'm not sure how to phrase this in a search, however I was curious if there's a shortcut in eclipse to allow us to declare a variable type based on what's after the equal.

For example:

firstname = User.getFirstName(); 

The minute you press enter, it would add "String" to the beginning of the line so it becomes:

String firstname = User.getFirstName();

Or even a shortcut key would suffice.

There are times when a class name might be long, or something like: Iterator<Entry<String, String>> which is long enough that a shortcut or auto add would be handy.

I'm not sure if this exists though.

Thanks guys.