多选题 Given:
3. class Sport {
4. Sport play() {System.out.print("play "); return new Sport(); }
5. Sport play(int x) {System.out.print ("play x "); return new Sport(); }
6. }
7. class Baseball extends Sport {
8. Baseball play() {System.out.print("baseball "); return new Baseball(); }
9. Sport play(int x) {System.out.print("sport "); return new Sport(); }
10.
11. public static void main(String[] args)
12. new Baseball() .play();
13. new Baseball() .play(7);
14. super.play (7);
15. new Sport().play();
16. Sport s = new Baseball();
17. s.play();
18. }}
What is the result?