Thinking in java学习笔记之迭代器

时间:2022-04-24 16:28:24

Thinking in java学习笔记之迭代器

  Map<String,String> map = new HashMap<String,String>();
List list = new ArrayList();
list.add("565");
map.put("key", "value");
Iterator it =map.keySet().iterator();
while(it.hasNext()){
String a=(String) it.next();
System.out.println(map.get(a));
}
Iterator its = list.iterator();
while(its.hasNext()){
System.out.println(its.next());
}