[Solved] You want to create a pointcut expression that matches all methods in any class within com.app.service and its subpackages, but only methods that have exactly two parameters of any type.... | Spring Boot

Spring Boot - Aspect-Oriented Programming

You want to create a pointcut expression that matches all methods in any class within com.app.service and its subpackages, but only methods that have exactly two parameters of any type. Which expression is correct?

Aexecution(* com.app.service..*.*(*, *))

Bexecution(* com.app.service.*.*(..))

Cexecution(* com.app.service..*.*(.., ..))

Dexecution(* com.app.service..*.*(*))

Step-by-Step Solution

Solution:

Step 1: Understand package and subpackage matching
com.app.service..* matches classes in the package and all subpackages.
Step 2: Match method parameters exactly
(* , *) means exactly two parameters of any type. (..) means any number of parameters, so it's incorrect here.
Step 3: Analyze options
execution(* com.app.service..*.*(*, *)) correctly matches all classes in package and subpackages with exactly two parameters. Others either match any number of parameters or wrong parameter counts.
Final Answer:
execution(* com.app.service..*.*(*, *)) -> Option A
Quick Check:
Use (*, *) for exactly two parameters [OK]

Quick Trick: Use (*, *) to match exactly two parameters [OK]

Common Mistakes:

Using (..) to match exact parameter count
Confusing single * with .. for subpackages
Missing commas between parameters

Master "Aspect-Oriented Programming" in Spring Boot

9 interactive learning modes - each teaches the same concept differently

Learn Why Deep Visual Try Challenge Project Recall Perf

More Spring Boot Quizzes

Which expression is correct?

Step 1: Understand package and subpackage matching

Step 2: Match method parameters exactly

Step 3: Analyze options

Final Answer:

Quick Check:

Want More Practice?