方法一:
Map<String, String> map = new HashMap<String, String>(); map.put("key1", "value1"); map.put("key2", "value2"); Set<Entry<String, String>> set = map.entrySet(); for (Entry<String, String> entry : set) { System.out.println(entry.getKey()+":"+entry.getValue()); }
方法二:
Map<String, String> map = new HashMap<String, String>(); map.put("key1", "value1"); map.put("key2", "value2"); for (Iterator it = map.entrySet().iterator(); it.hasNext();) { Map.Entry enry = (Map.Entry) it.next(); System.out.println(enry.getKey() + ":"+ enry.getValue()); }
归根到底两个方法本质是一样的