How do I configure logging in a C++ and Java application?

How do I configure logging in a C++ and Java application?

To configure logging in C++, you can use libraries like spdlog or Boost.Log. In Java, you can use Log4j or SLF4J. Would you like examples for both?

Yes, please provide examples for both C++ and Java.

For C++, using spdlog, you can set it up like this:

#include <spdlog/spdlog.h>

int main() {
    spdlog::info("Hello, {}", "world");
    return 0;
}

For Java with Log4j:

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

public class Main {
    private static final Logger logger = LogManager.getLogger(Main.class);

    public static void main(String[] args) {
        logger.info("Hello, {}", "world");
    }
}

What are the advantages of using these logging libraries?

Using libraries like spdlog and Log4j provides structured logging, performance optimizations, and easy configuration. They also support various log levels and output formats.

Can I configure logging levels dynamically?

Yes, both spdlog and Log4j allow dynamic configuration of logging levels at runtime, enabling you to adjust verbosity without changing code.