Problem object cannot be cast to another object

Question

I have method, which sorting my data from db by countries in class Teams. Hibernate return my data in List<>. TeamsDao my hibernate Dao method. Teams was defined in 1 dependency.

My error log:

There was an unexpected error (type=Internal Server Error, status=500).
class com.champions.league.model.Teams cannot be cast to class com.champions.league.model.Teams (com.champions.league.model.Teams is in unnamed module of loader 'app'; com.champions.league.model.Teams is in unnamed module of loader org.springframework.boot.devtools.restart.classloader.RestartClassLoader @169e859a)
java.lang.ClassCastException: class com.champions.league.model.Teams cannot be cast to class com.champions.league.model.Teams (com.champions.league.model.Teams is in unnamed module of loader 'app'; com.champions.league.model.Teams is in unnamed module of loader org.springframework.boot.devtools.restart.classloader.RestartClassLoader @169e859a)

My League champions league class:

@Controller
@RequestMapping("/teams")
public class ChampLeagueController {

@GetMapping
public String showDesignForm(Model model){
   List<Teams> teamsList = TeamsDao.findAll();
    Teams.Countries[] countries = Teams.Countries.values();
    for(Teams.Countries country: countries){
        model.addAttribute(country.toString().toLowerCase(), filterByCountry(teamsList, country));
    }
    model.addAttribute("ChampionsLeague", new ChampionsLeague());
    return "ChampionsLeague";
}

public ArrayList<Teams> filterByCountry(List<Teams> teamsList, Teams.Countries country){
    ArrayList<Teams> sortedList = new ArrayList<>();
    for (Teams teams : teamsList) {
        if (teams.getCountries() == country)
            sortedList.add(teams);
    }
    return sortedList;
}

My Teams class:

@Entity
@Table(name = "teams")
public class Teams {
@Id
private int id;
private String name;
@Enumerated(EnumType.STRING)
private Countries countries;
public enum Countries{
    SPAIN, ENGLAND, GERMANY, ITALY, FRANCE, NETHERLANDS
}
public int getId() {
    return id;
}
public void setId(int id) {
    this.id = id;
}
public String getName() {
    return name;
}
public void setName(String name) {
    this.name = name;
}
public Countries getCountries() {
    return countries;
}
public void setCountries(Countries countries) {
    this.countries = countries;
}

}

Please check [this answer](https://stackoverflow.com/questions/57750294/class-loader-error-unnamed-module-of-loader-org-springframework-boot-devtools), however, it suggests to disable restart in boot devtools. — Nowhere Man, May 17 '20 at 18:52

score 0 · Answer 1 · answered May 19 '20 at 08:43

0

I suggest you delete your compiled classes by hand, and let all your sources recompile. I think I ran into such a problem once or twice, too... might be rare compiler bug.

answered May 19 '20 at 08:43

godsim

181
1
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Problem object cannot be cast to another object

1 Answers1