What is a framework? A framework is a set of specifications. Since it is a specification, you must abide by the constraints specified in this 100 framework when using this framework. In Java development, a framework is represented by a set of rules and a set of jar packages.

Encapsulated redundant code

The framework encapsulates some redundant codes with low reuse rate for us.

Reflection and dynamic proxy mechanism

Using reflection and dynamic proxy mechanism, the code is universal.

Simplify development

This framework simplifies development. For example, struts uses reflection mechanism and interceptor mechanism to help us get the value of the form, and hibernate provides some general additions, deletions and corrections to the database.

Abide by the norms

Using the framework needs to comply with some specifications and configurations.