[Solved] Why does this scheduled method cause an error?@Scheduled(fixedRate = 1000) private void doWork() { System.out.println("Working"); } | Spring Boot

Spring Boot - Async Processing

Why does this scheduled method cause an error?

@Scheduled(fixedRate = 1000)
private void doWork() {
  System.out.println("Working");
}

AMethod cannot print to console

BfixedRate cannot be less than 5000

CScheduled methods must be public

DMethod must return boolean

Step-by-Step Solution

Solution:

Step 1: Check method visibility requirements
Scheduled methods must be public so Spring can proxy and call them.
Step 2: Validate other options
fixedRate can be any positive number, return type can be void, printing is allowed.
Final Answer:
Scheduled methods must be public -> Option C
Quick Check:
Scheduled methods require public visibility = D [OK]

Quick Trick: Make scheduled methods public for Spring to call them [OK]

Common Mistakes:

Master "Async Processing" in Spring Boot

9 interactive learning modes - each teaches the same concept differently

More Spring Boot Quizzes

Why does this scheduled method cause an error?