[[spring-core]]
= Core Technologies
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This part of the reference documentation covers all the technologies that are
absolutely integral to the Spring Framework.

Foremost amongst these is the Spring Framework's Inversion of Control (IoC) container.
A thorough treatment of the Spring Framework's IoC container is closely followed by
comprehensive coverage of Spring's Aspect-Oriented Programming (AOP) technologies.
The Spring Framework has its own AOP framework, which is conceptually easy to
understand and which successfully addresses the 80% sweet spot of AOP requirements
in Java enterprise programming.

Coverage of Spring's integration with AspectJ (currently the richest -- in terms of
features -- and certainly most mature AOP implementation in the Java enterprise space)
is also provided.

include::core/core-beans.adoc[leveloffset=+1]

include::core/core-resources.adoc[leveloffset=+1]

include::core/core-validation.adoc[leveloffset=+1]

include::core/core-expressions.adoc[leveloffset=+1]

include::core/core-aop.adoc[leveloffset=+1]

include::core/core-aop-api.adoc[leveloffset=+1]

include::core/core-null-safety.adoc[leveloffset=+1]

include::core/core-databuffer-codec.adoc[leveloffset=+1]

include::core/core-spring-jcl.adoc[leveloffset=+1]

include::core/core-appendix.adoc[leveloffset=+1]
