ClassCastException Error from List to Single Object

I have a problem to get a Single Location Object from a List. Calling getLocations() in primefaces dataTable works. And I can display all Locations. But when I want to get a Single Location from the locations List, then I get always a ClassCastException. I use JPA (Hibernate).

Entity Bean:

@Entity
@Table(name = "location")
@NamedQueries({
    @NamedQuery(name = "Location.findAll", query = "SELECT l FROM Location l")})
public class Location implements Serializable {
    private static final long serialVersionUID = 1L;

@Column(name = "name")
private String name;
...

CDI Bean:

private List<Location> locations = null;

@PostConstruct
public void init() {
    locations = getService().findAll();
    Iterator iter = getLocations().iterator();
    Location first = (Location)iter.next(); //ClassCastException

Same problem with this:

for (Location location : getLocations()) //Classcastexception
 {...}

error Message:

java.lang.ClassCastException: package.ejb.entity.Location cannot be cast to package.ejb.entity.Location