以下代码执行的结果是多少（）？ public class Demo { public static void main(String[] args) { Collection[] collections =  {new HashSet(), new ArrayList(), new HashMap().values()}; Super subToSuper = new Sub(); for(Collection collection: collections) { System.out.println(subToSuper.getType(collection)); } } abstract static class Super { public static String getType(Collection collection) { return “Super:collection”; } public static String getType(List list) { return “Super:list”; } public String getType(ArrayList list) { return “Super:arrayList”; } public static String getType(Set set) { return “Super:set”; } public String getType(HashSet set) { return “Super:hashSet”; } } static class Sub extends Super { public static String getType(Collection collection) { return "Sub"; } } }

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