Final answer:
AspectJ is an AOP extension for Java. It can be enabled in a Spring application using Spring AOP.
Step-by-step explanation:
AspectJ is a powerful aspect-oriented programming (AOP) extension for the Java programming language. It allows developers to modularize cross-cutting concerns into separate units called aspects, which can then be applied to different parts of a codebase to enhance modularity and maintainability.
To enable AspectJ for use within a Spring application, you can use the Spring AOP framework. Spring AOP integrates with AspectJ and provides a way to apply aspects to Spring beans. This can be done through XML configuration or Java annotations.
For example, you can create an aspect that logs method executions, and then use Spring AOP to apply this aspect to specific beans in your Spring application.
Learn more about AspectJ