Refactoring support
The goal of refactoring (behavior-preserving program transformation) is to make a system-wide code change without affecting the behavior of the system. The JDT provides assistance for managing refactorings.
The JDT supports a number of transformations (e.g. Extract Method, Inline Local Variable) described in Martin Fowler's book Refactoring: Improving the Design of Existing Code, Addison Wesley 1999.
When performing a refactoring operation, you can optionally preview all the impending changes resulting from a refactoring action before you choose to carry them out. Thus, you can execute a refactoring in one of two ways:
- Refactoring
with preview
In a controlled refactoring, you are notified of potential problems and are given a detailed preview of what the refactoring action will do. - Refactoring without
preview
In a quick refactoring, the potential problem notification and preview are omitted. If a Stop problem is detected, the refactoring will be halted and a list of problems will be displayed.
Refactoring commands are available from the context menus of several Java views (e.g. Package Explorer, Outline) and editors.
Refactoring
Refactoring without preview
Refactoring with preview
Previewing refactoring changes
Undoing a refactoring operation
Redoing a refactoring operation
Refactoring actions
Refactoring wizard
Refactoring preferences
Extract Method Errors
