Explanation: To enable AspectJ annotation support in Spring, you have already defined an empty XML element, aop:aspectj-autoproxy.

Explanation: In the bean configuration file, all the Spring AOP configurations must be defined inside the aop:config element.

Explanation: An advice element requires either a pointcut-ref attribute to refer to a pointcut or a pointcut attribute to embed a pointcut expression directly.

Explanation: Weaving is the process of applying aspects to your target objects.

Explanation: AspectJ compile-time weaving is done through a special AspectJ compiler called ajc.

Explanation: AspectJ load-time weaving (also known as LTW) happens when the target classes are loaded into JVM by a class loader.

Explanation: You need only to add a VM argument to the command that runs your application. Then your classes will get woven when they are loaded into the JVM.

Explanation: Spring will be able to detect the most suitable load-time weaver for your runtime environment.

Explanation: To use the AspectJ weaver, you need to include the spring-instrument.jar

Explanation: Objects created outside the Spring IoC container are usually domain objects. They are often created using the new operator or from the results of database queries.

Explanation: To inject a Spring bean into domain objects created outside Spring, you need the help of AOP.

Explanation: As the domain objects are not created by Spring, you cannot use Spring AOP for injection.

Explanation: When a class with the @Configurable annotation is instantiated, the aspect will look for a prototype-scoped bean definition whose type is the same as this class.