请编写程序，模拟JUnit的@Test注解
请编写程序，模拟JUnit的@Test注解
public class Demo {
@MyDemo
public void mentod1() {
System.out.println("1");
}
public void mentod2() {
System.out.println(2);
}
public void mentod3() {
System.out.println(3);
}
@MyDemo
public void mentod4() {
System.out.println("4");
}
public static void main(String[] arge) throws Exception {
Demo demo = new Demo();
Class clas = Demo.class;
Method[] declaredMethods = clas.getDeclaredMethods();
for (Method declaredMethod : declaredMethods) {
if (declaredMethod.isAnnotationPresent(MyDemo.class)){
declaredMethod.invoke(demo);
}
}
}
}
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.METHOD)
public @interface MyDemo {
}