java / beginner
Snippet
Application Logging with SLF4J
Spring Boot uses SLF4J as a logging abstraction. It is best practice to log important events instead of using System.out.println for debugging in production.
snippet.java
java
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public class MyService {private static final Logger logger = LoggerFactory.getLogger(MyService.class);public void process() {logger.info("Starting process...");logger.warn("Observation made during execution.");}}
spring
Breakdown
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LoggerFactory.getLogger(MyService.class)
Creates a logger instance specifically for this class.
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logger.info("...")
Logs an informational message to the console or file.
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logger.warn("...")
Logs a warning that something unexpected but non-fatal happened.