Action Class

You can use ApexPages.Action to create an action method that you can use in a Visualforce custom controller or controller extension.

Namespace

ApexPages

Usage

For example, you could create a saveOver method on a controller extension that performs a custom save.

Instantiation

The following code snippet illustrates how to instantiate a new ApexPages.Action object that uses the save action:
ApexPages.Action saveAction = new ApexPages.Action('{!save}');