java遍歷map

1. ap<String, String> map = new HashMap<String, String>();
2. Iterator<Entry<String, String>> it = map.entrySet().iterator();
3. while (it.hasNext()) {
4.     Entry<String, String> entry = it.next();
5.    String key = entry.getKey();
6.     String value = entry.getValue();
7.     System.out.println("key: " + key);
8.     System.out.println("value: " + value);
9. }