public class Parent {
  protected Parent(int x) { }
}

final class Derived extends Parent {
    Derived(int x) {
        super(x);
    }

    @Override
    public int hashCode() {
        return super.hashCode();
    }

    @Override
    public boolean equals(Object obj) {
        return super.equals(obj);
    }

    @Override
    protected Object clone() throws CloneNotSupportedException {
        return super.clone();
    }

    @Override
    public String toString() {
        return super.toString();
    }

    @Override
    protected void finalize() throws Throwable {
        super.finalize();
    }
}