反射结合自定义注解UseCase追踪用例演示

package _5_36;

import java.util.*;

import java.lang.reflect.Method;

public class UserAnnotation {

public static void main(String[] args) {

List<Integer> li = new ArrayList<Integer>();

Collections.addAll(li, 47, 48, 49, 50); // 将元素 47, 48, 49, 50 插入集合 li 中

trackUseCases(li, PasswordUtils.class);

}

public static void trackUseCases(List<Integer> li, Class<?> cl) {

for (Method m : cl.getDeclaredMethods()) {

UseCase uc = m.getAnnotation(UseCase.class);

if (uc != null) {

System.out.println("Found Use Case:" + uc.id() + " " + uc.description());

li.remove(new Integer(uc.id()));

}

}

for (int i : li) {

System.out.println("Warning: Missing use case-" + i);

}

}

}