클래스의 정보 가져오기

                Class<'Question'> clazz = Question.class;
                //클래스출력
                logger.debug("Class: "+clazz.getName());
                //필드출력
                Field[] fieldArray = clazz.getDeclaredFields();
                for (Field field : fieldArray) {
                    logger.debug("Field: "+field.getName());
                }
                //생성자출력
                Constructor[] constArray = clazz.getDeclaredConstructors();
                for (Constructor constructor : constArray) {
                    logger.debug("Constructor: "+constructor.getName()+" \\ Parameter: "+constructor.getParameterCount());
                }
                //메서드출력
                Method[] methodArray = clazz.getDeclaredMethods();
                for (Method method : methodArray) {
                    logger.debug("Method: "+method.getName());
                    logger.debug("Parameter: "+method.getParameterCount());
                }
            

클래스의 메서드 실행하기: 인자(arguments)가 없는경우

                Class<'MyClass'> clazz = MyClass.class;
                Method[] methods = clazz.getDeclaredMethods();
                for (Method method : methods) {
                    MyClass my = clazz.newInstance();
                    method.invoke(my);
                }
            

Annotation을 활용하여 특정 메서드만 실행하기

                Class<'MyClass'> clazz = MyClass.class;
                Method[] annotMethods = clazz.getDeclaredMethods();
                MyClass my = clazz.newInstance();
                for (Method method : annotMethods) {
                    Annotation[] annotations = method.getDeclaredAnnotations();
                    for (Annotation annotation : annotations) {
                        //실행하고 싶은 어노테이션이 @MyAnnotation 일때
                        if(annotation.annotationType() == MyAnnotation.class) {
                            method.invoke(my);
                        }
                    }
                }