Continue working on your projects. Consider applying aspect-oriented programming in your projects.
To install the support for aspect-oriented programming in Eclipse, follow these instructions.
The simplest way to use the AspectJ programming language in your projects is to create a new AspectJ project and then to copy your own source code into it.
To apply aspect-oriented programming in an existing Java project in Eclipse, a conversion to an AspectJ project can be used (make a right click on a project and choose Configure/Convert to AspectJ project). The conversion actually only adds the AspectJ Runtime Library to the project and sets the AspectJ compiler as its compiler, which can be made manually.
The AspectJ compiler is also available standalone on the AspectJ website.