To get a better idea of how to develop plug-ins using PDE, you will create a simple workbench view. In this post, Ill give you some basic understanding.
To get started, launch your Eclipse SDK and choose an empty workspace. When you close the Welcome page, you should find yourself in the Java perspective, by default (however, it is not required that you are in the Java perspective in order to proceed). First, you will use the New Plug-in wizard to create the plug-in. Then, you will
Extensions are the central mechanism for contributing behavior to the platform. Unless your plug-in is a simple Java API library made available to other plug-ins, new behavior is contributed as an extension.
The Extensions page is where you can add, remove and modify the extensions your plug-in contributes to the platform.
Each extension point comes with an xml schema specifying