Whenever possible use the standard message dialog boxes provided in the MessageDialog
class as part of the org.eclipse.jface.dialogs
package. The error message can be modeless, which means it allows the user to continue to interact with the application or modal, which means it requires that the user respond to the error dialog box before continuing to use the application. The following sections describe the available Eclipse message types.
Parent topic: Extending the capabilities of your application: XPD621