What is the essence of java annotations

Essential description

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

2. Annotation is just a special kind of annotation in a precise sense. When the compiler compiles bytecode for Java code, it will detect that a certain class or method is modified by some annotations, and then it will perform some processing on these annotations.

Example

The definition of annotation @Override, in fact, it is essentially:

public interface Override extends Annotation{
    
}

What are the characteristics of Java

Java What are the characteristics of 1. As a representative of static object-oriented programming languages, Java language implements object-oriented theory and allows programmers to perform complex programming with an elegant way of thinking. 2.Java has the characteristics of simplicity, object-oriented, distributed, security, platform independence and portability, and dynamic nature. 3. Use Java to write desktop applications, Web applications, distributed systems and embedded system applications, etc.

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