In the workspace, a plug-in is represented by a single project that has a plugin.xml (manifest) file at its root and that encapsulates all the code and resources of the plug-in. An AspectJ plug-in project will have AspectJ nature, will be build by the AspectJ builder and will normally depend on the AspectJ runtime plug-in
To create a plug-in project, bring up the New Plug-in Project creation wizard via File > New > Plug-in Project.
A plug-in project can either be created as a Java project or a simple project. When creating an AspectJ plug-in project you must initially create a Java plug-in project.
Complete the new plug-in wizard with the required details. Please see the PDE guide for more information on creating plug-in projects.
When you have created your plug-in, right click on the project in the package explorer and select Convert to AspectJ project. You will be asked whether you want to add the AspectJ runtime plug-in, org.aspectj.runtime as a plug-in dependency. Select Yes. You have now created an AspectJ plug-in project
Creating an Ant build file for an AspectJ plug-in
Deploying an AspectJ plug-in
Converting a plug-in project to an AspectJ project