Oracle JDeveloper Extension SDK
Oracle JDeveloper's Extension SDK is a public API that can be used to extend and customize the JDeveloper development environment. Developers can use the Extension SDK to develop extensions and integrate third party tools with the JDeveloper IDE. Using the APIs provided by the Extension SDK developers can add components that range from a new menu option through a wizard and up to a complete new editor. Extensions can be exposed through JDeveloper's Check-for-Updates functionality for easy one click install.
With the release of JDeveloper 11gR2, there is a difference between the two versions of the Extension SDK.