HashMap遍历的两种方法

Map map = new HashMap();for (Iterator iter = map.entrySet().iterator(); iter.hasNext();) {  Map.Entry entry = (Map.Entry) iter.next();  Object key = entry.getKey();  Object val = entry.getValue();}

Map map = new HashMap();for (Iterator iter = map.keySet().iterator(); iter.hasNext();) {  Object key = iter.next();  Object val = map.get(key);}