System.out.println("**********用iterator迭代删除hashmap***********"); Iterator i = hashMap.entrySet().iterator(); while (i.hasNext()) { Map.Entry entry = (Map.Entry) i.next(); if (entry.getValue() == "lwt1") { i.remove(); } }这是删除指定的v值。我想用迭代器遍历去删除hashmap每一个键值对,求求大佬帮帮我