unChecked call to Class

Question

public class UserHeaderRepository<TEntity>{

  private final CollectionReference collectionReference;

  private final Class<TEntity> entityClass;

  public static UserHeaderRepository getInstance()
  {          

     return new UserHeaderRepository(UserHeader.class);
  }

  public UserHeaderRepository ( Class < TEntity > entityClass ) {

    this.entityClass = entityClass;
    FirebaseFirestore db = FirebaseFirestore.getInstance();
    this.collectionReference = db.collection("global_community");
 }

I don't know why I got the below error:

unchecked call to  UserHeaderRepository(Class<TEntity>)  row type 'as a member of raw type  '../appRepository/UserHeaderRepository'

*FYI:* Your static `getInstance()` method uses *raw* version of `UserHeaderRepository`. Don't do that. [What is a raw type and why shouldn't we use it?](https://stackoverflow.com/q/2770321/5221149) — Andreas, Jan 01 '20 at 05:44
it got error here "return new UserHeaderRepository(UserHeader.class)" — Skypoint Vietnam, Jan 01 '20 at 06:07
Is this a warning or an error? As @Adwait said in his answer it should be just a warning. — Andrei Tigau, Jan 02 '20 at 08:47

score 1 · Answer 1 · answered Jan 01 '20 at 06:32

You are using raw types where you were supposed to use the parameterized type, change the getInstance method to this,

public static UserHeaderRepository<UserHeader> getInstance() {
    return new UserHeaderRepository<>(UserHeader.class);
}

Also it should not be an error it should be warning from the compiler.

unChecked call to Class

1 Answers1