Main.java

//DEPS io.micronaut:micronaut-http-server-netty:3.5.2
//DEPS org.slf4j:slf4j-simple:1.6.1
//DEPS io.micronaut:micronaut-http-client:3.5.2
//DEPS io.micronaut:micronaut-inject-java:3.5.2
//SOURCES MicroController.java
//JAVA 17+
package jbang.test;
    
import io.micronaut.runtime.Micronaut;

public class Main {

    public static void main(String[] args) {
        Micronaut.run(args);
    }
}

MicroController.java

package jbang.test;

import io.micronaut.http.annotation.Controller;
import io.micronaut.http.annotation.Get;

@Controller("/hello")
public class MicroController {

    static record Person(String firstName, String lastName, int age) {
    }

    @Get
    public Person getPerson() {
        return new Person("Firsty", "Lastly", 30);
    }
}