import java.lang.reflect.*;
public class Test {
    public static void main(String[] args) {
        Class c=null;
        try {
            c=Class.forName("day16.Student");
            Method[] m=c.getDeclaredMethods();
            for(int i=0;i<m.length;i++){
                author ann=m[i].getAnnotation(Class.forName("author"));
                System.out.println(m[i].getName()+":"+ann.value()+":"+ann.date());
            }
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        }
    }

}

import java.lang.annotation.*;

@Documented
@Inherited
@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.METHOD,ElementType.TYPE})
public @interface author {
    public String value();
    public String date();
    
}