多选题 Given:
2. public class Humping {
3. public static void main(String[] args)
4. String r = "-";
5. char[] c = {"a", "b", "c", "z"};
6. for(char c1: c)
7. switch (c1) {
8. case "a": r += "a";
9. case "b": r += "b"; break;
10. default: r += "X";
11. case "z": r+= "z";
12. }
13. System. out.println(r);
14. } }
What is the result?