SimonHarmonicMinor

public class Person {
    public Person() {
        System.out.println("I was created");
    }

    @PostConstruct
    private void init() {
        System.out.println("I was constructed");
    }
}

SimonHarmonicMinor

@Entity
@Setter
@Getter
public class Book {
    @Id
    @GeneratedValue
    private Long id;
    private String name;
    private String genre;
}