JAVA中Map集合遍历

for (Map.Entry<String, String> entry : map.entrySet()) {
    System.out.println("key= " + entry.getKey() + " and value= " + entry.getValue());
 }

   for (String key : map.keySet()) {
    System.out.println("key= "+ key + " and value= " + map.get(key));
   }