public class Person {
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private Long id;

    private String name;
    private String surname;
}

Person person = new Person(null, "Roman", "Brzęścikiewicz");

personRepository.save(person);

id;name;surname
1;Roman;

id;name;surname
1;Roman;Brzescikiewicz

spring.datasource.url=jdbc:postgresql://localhost:5433/db
spring.datasource.username=user
spring.datasource.password=pass
spring.datasource.driverClassName=org.postgresql.Driver
spring.jpa.hibernate.ddl-auto=validate