public class Person implements java.io.Serializable {
   private Long id;
   private String name;
   private Set<Place> places = new HashSet<Place>(0);
   
   .... getters-setters

   @ManyToMany(fetch = FetchType.LAZY)
   @JoinTable(name = "persona_puesto", catalog = "test", joinColumns = { @JoinColumn(name = "ID_PERSONA", nullable = false, updatable = false) }, inverseJoinColumns = { @JoinColumn(name = "ID_PUESTO", nullable = false, updatable = false) })
   public Set<Place> getPlaces() {
      return this.places;
   }

   public void setPlaces(Set<Place> places) {
      this.places = places;
   }

}

public class Place implements java.io.Serializable {

   private Long id;
   private String dePlace;
   private Set<Person> persons = new HashSet<Person>(0);

   .... getters-setters

   @ManyToMany(fetch = FetchType.LAZY, mappedBy = "places")
   public Set<Person> getPersons() {
      return this.persons;
   }

   public void setPersons(Set<Person> persons) {
      this.persons = persons;
   }

}