1 public class PrintContainers {
2
3 static Collection fill(Collection<String> collection) {
4 collection.add("rat");
5 collection.add("cat");
6 collection.add("dog");
7 collection.add("dog");
8 return collection;
9 }
10
11 static Map fill(Map<String, String> map) {
12 map.put("rat", "米老鼠");
13 map.put("cat", "喵瞄");
14 map.put("dog", "拉拉");
15 map.put("dog", "灰灰");
16 return map;
17 }
18
19
20 public static void main(String[] args) {
21 Print.print(fill(new ArrayList<String>()));
22 Print.print(fill(new LinkedList<String>()));
23 Print.print(fill(new HashSet<String>()));
24 Print.print(fill(new TreeSet<String>()));
25 Print.print(fill(new LinkedHashSet<String>()));
26 Print.print(fill(new HashMap()));
27 Print.print(fill(new TreeMap()));
28 Print.print(fill(new LinkedHashMap()));
29 }
30
31 }
