logging using slf4j

LoggingTest.java

import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class LoggingTest {
    private final Logger logger = LoggerFactory.getLogger(this.getClass());

    @Test
    public void foo() {
        logger.error("error for {} message for {}", 123, "hello");
    }
}