What is the essence of java annotations

In this article, the editor introduces in detail "what is the essence of java annotations", the content is detailed, the steps are clear, and the details are handled properly. I hope that this article "what is the nature of java annotations" can help you solve your doubts.

Essential explanation

1. The essence of annotations is an interface that inherits the Annotation interface.

2. In the exact sense, the annotation is just a special kind of annotation. In the process of compiling bytecode for java code, the compiler detects that a class or method is modified by some annotations, and then it does some processing on these annotations.

Example

The definition of annotated @ Override is essentially:

What are the characteristics of public interface Override extends Annotation {} Java? what are the characteristics of Java? what is the 1.Java language that represents the static object-oriented programming language? it implements the object-oriented theory and allows programmers to carry out complex programming in an elegant way of thinking. 2.Java has the characteristics of simplicity, object-oriented, distributed, security, platform independence and portability, dynamic and so on. 3. Using Java, you can write desktop applications, Web applications, distributed systems, embedded system applications, and so on.

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