A friend uses the Java framework when doing Java development, and it is very convenient to use. But at this time someone asked, what exactly is a Java framework?
In fact, the Java framework is a collection of classes and interfaces, through which a series of program implementations are completed through coordination of these classes and interfaces.
The JAVA framework can be divided into three layers: presentation layer, business layer and physical layer.
The framework is also called a semi-finished product under development. It cannot provide everything for the entire WEB application, but with the framework, we can focus on the development of business logic without having to care about its technology. Implementation and some auxiliary business logic.
The well-known Structs and Spring are powerful representatives of the presentation layer and business layer frameworks.
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