List<Integer>list = new ArraList<>();
list.add(1);
list.add(11);
list.add(12);
list.add(14);
//1迭代器
Iteractor<Integer> s = list.iteractor();
while(s.hasNext()){
Integer haha = s.next();
System.out.println(haha);
}
//2for循环
for(int i = 0;i < list.size();i++){
Integer s = list.get(i);
System.out.println(s);
}
//3增强for
for(Integer s:list){
System.out.println(s);
}
