Java – register all classes annotated with @ myannotation

I have an annotation @ myannotation, which I can use to annotate any type (class) Then I have a class named annotatedclassregister. I hope it can register all classes annotated with @ myannotation so that I can access them later I want to register these classes automatically when creating annotatedclassregister. If possible, the most important thing is before instantiating the annotated class

I have AspectJ and Guice for my use The only solution I have proposed so far is to use Guice to inject a single instance of annotatedclassregister into an aspect, which searches all classes annotated with @ myannotation and adds the code required to register this class in its constructor The disadvantage of this solution is that I need to instantiate each annotated class to actually run the code added by AOP, so I can't take advantage of the delayed instantiation of these classes

Simplified pseudo code example of my solution:

// This is the class where annotated types are registered
public class AnnotatedClassRegister {
    public void registerClass(Class<?> clz) {
        ...
    }
}

// This is the aspect which adds registration code to constructors of annotated
// classes
public aspect AutomaticRegistrationAspect {

    @Inject
    AnnotatedClassRegister register;

    pointcutWhichPicksConstructorsOfAnnotatedClasses(Object annotatedType) : 
            execution(/* pointcut deFinition */) && args(this)

    after(Object annotatedType) :
            pointcutWhichPicksConstructorsOfAnnotatedClasses(annotatedType) {

        // registering the class of object whose constructor was picked 
        // by the pointcut
        register.registerClass(annotatedType.getClass())
    }
}

What method should I use to solve this problem? Is there a simple way to get all these annotated classes in the classpath through reflection, so I don't need to use AOP at all? Or any other solution?

Thank you very much for any ideas, thank you!

Solution

This is possible:

>Gets all paths in the classpath Parse system getProperties(). Getproperty ("Java. Class. Path", null) to get all paths. > Use classloader Getresources (path) get all resources and check the class: http://snippets.dzone.com/posts/show/4831