Polpid's Pensieve

public class Test {
    public static void main(String[] args) {
            Pattern pattern      = Pattern.compile("[ABCD]");
        Matcher matcher = pattern.matcher("A");
        System.out.println(matcher.matches());
    }
}

결과 : true 

@Aspect   // aspect 선언
public class Audience {
    @Pointcut("execution(* *.perform(..))") // pointcut 정의
    public void performance(){}
   
    @Before("performance()")
    public void takeSeats(){
   
    }
   
    @AfterReturning("performance()")
    public void applaud(){
       
    }
   
    @AfterThrowing("performance()")
    public void demandRefund(){
       
    }
}

<bean id="audienceAdvisor" class="org.springframework.aop.aspectj.AspectJExpressionPointcutAdvisor">
    <prorperty name="advice" ref="audienceAdvice"></prorperty>
    <prorperty name="expression" value="execution(* *.perform(..))"></prorperty>
</bean>
excution(* *.perform(..))

excution  : method가 실행될때
*            : 모든 반환 값 타입에 대해
*.           : 모든 클래스의
perform   : perform() method
(..)         : 인자의 개수에 상관없이