On 04/06/2012 09:00 AM, Hamed Mohammadi wrote:
> I have a service class that I need it be accessible from several views
> and editors. It must be created in application startup onece.
>
> Thanks.
You can use an Activator for creating a singleton. An Activator is an
optional part of a plugin that allows you to hook into the plugins life
cycle. You can use it to setup static variables that other components
need to access.

The super class of your Activator depends on the type of plugin you
have(UI, non-UI). Look at the documentation for
org.eclipse.core.runtime.Plugin and its subclasses to pick the
appropriate base class for your plugin.