How to use Java's @Documented annotation?

Description

1. @Documented is used to describe other types of annotations that should be used as public application programming interfaces for marked program members, so it can be used as tool documentation such as javadoc. Documented is a markup comment and has no members.

Function

2. Include comments in javadoc.

Example

@Documented
@interface B{
 
    String value() default "这是一个自定义类";
}
 
@B
public class MyTest2 {
 
    public static void main(String[] args) throws Exception{
        Class<?> c=Class.forName("hello3.B");
        System.out.println(c);
    }
}

What are the basic data types of java

The basic data types of Java are divided into:

1. Integer type , a data type used to represent integers.

2. Floating point type, a data type used to represent decimals.

3. Character type. The keyword of character type is "char".

4. Boolean type is the basic data type that represents logical values.

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