Simple spring boot application

Application.java

package bytetrain;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.CommandLineRunner;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class Application implements CommandLineRunner {

    private final EnvirontmentPrinter printer;

    private static Logger LOG = LoggerFactory.getLogger(Application.class);

    @Autowired
    public Application(EnvirontmentPrinter printer) {
        this.printer = printer;
    }

    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }

    @Override
    public void run(String... args) {
        printer.print();
    }
}

application.yml

app:
  param1: param1

EnvironmentPrinter.java

package bytetrain;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.EnvironmentAware;
import org.springframework.core.env.Environment;
import org.springframework.stereotype.Component;

@Component
public class EnvironmentPrinter implements EnvironmentAware {
    private static Logger LOG = LoggerFactory.getLogger(Application.class);

    private Environment environment;
    private final Properties properties;

    @Autowired
    public EnvironmentPrinter(Properties properties) {
        this.properties = properties;
    }

    @Override
    public void setEnvironment(Environment environment) {
        this.environment = environment;
    }

    void print() {
        String activeProfiles = String.join(",", environment.getActiveProfiles());

        LOG.info("Active profiles: {}", activeProfiles);
        LOG.info("Properties: {}", properties);
    }
}

Properties.java

package bytetrain;

import lombok.Data;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;

@Component
@ConfigurationProperties(prefix = "app")
@Data
public class Properties {
    private String param1;
}