Built-in Java Annotations Annotation, reflection Reflection

Built-in Java Annotations Annotation

• @Target: Represents a note can be used in those places
• @Retention: Represents a note somewhere still valid
• @Documented: Indicates whether our generation in the javadoc comment
• @Inherited: a subclass can inherit the parent class notes

Reflection Reflection

Three ways to get the Class class:

1. Obtained by the object ==> new xxx;. Xxx () getClass ();
2. == obtained by forname> Class.forName ();
3. Obtained ==> xxx.class .class class name;