Bleach :
I am trying to use @SuperBuilder of Lombok, yet for some reason I am having the issue in compile time Error:(14, 1) java: wrong number of type arguments; required 3
That's my subclass;
@SuperBuilder
public class FetchFollowersOperation extends Operation<List<InstagramUserSummary>> {
private String userName;
public List<InstagramUserSummary> operate() {
InstagramSearchUsernameResult userResult = null;
try {
userResult = instagram4j.sendRequest(new InstagramSearchUsernameRequest(this.userName));
InstagramGetUserFollowersResult followers = instagram4j.sendRequest(new InstagramGetUserFollowersRequest(userResult.getUser().getPk()));
return followers.getUsers();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
}
And the parent class is below;
@SuperBuilder
public abstract class Operation<T> {
protected Instagram4j instagram4j;
public abstract T operate();
}
Vinay Prajapati :
The issue is at line public class FetchFollowersOperation extends Operation<List<InstagramUserSummary>>. You must specify one type only i.e. T not it's inner generic type here i.e. replace it with public class FetchFollowersOperation extends Operation<List>.
This solves your problem. Though I went through lombok documentation and other details on what causes this issue, but didn't get any information on that.
Hope it helps!
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