Inherited method returned reference type
generics, inheritance, java
Solution
No cast, no @SuppressWarning, few lines only:
public abstract class SuperClass<T extends SuperClass<T>> {
protected T that;
public T chain() {
return that;
}
}
public class SubClass1 extends SuperClass<SubClass1> {
public SubClass1() {
that = this;
}
}
public class SubClass2 extends SuperClass<SubClass2> {
public SubClass2() {
that = this;
}
}
Problem
I'm facing the problem described in this question but would like to find a solution (if possible) without all the casts and @SuppressWarning annotations. A better solution would be one that builds upon the referenced one by: - removing @SuppressWarning - removing casts Solutions presented here will be graded with 2 points based on the criteria. Bounty goes to solution with most points or the "most elegant" one if there is more than one with 2 points.