Lombok’s @Slf4j Annotation Simplifies Logging

Any Java application must have logging in order to track performance, debug problems, and get insights into how the application behaves. However, especially in big applications, setting up and maintaining logs in every class might result in boilerplate code. In this situation, Lombok’s @Slf4j annotation is helpful because it reduces boilerplate and makes logging in Java applications straightforward and reliable.

We’ll examine what @Slf4j is, its advantages, and how to apply it successfully in your projects in this post.

1. What is @Slf4j?

An annotation called @Slf4j is offered by Lombok, a well-known Java library that minimizes boilerplate code. Lombok creates a Logger instance for SLF4J (Simple Logging Facade for Java) in the background when you add @Slf4j to a class. Without having to manually create or configure a Logger instance in every class, you can now write clear, effective logging statements.

2. Why Use @Slf4j?

Without Lombok, here’s how you’d typically set up logging in a class:

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class MyService {
    private static final Logger logger = LoggerFactory.getLogger(MyService.class);

    public void process() {
        logger.info("Logging...");
    }
}