Arraylist的遍历

List list = new ArrayList();

//方法1
for(int i = 0;i < list.size(); i ++){
System.out.println(list.get(i));
}
//方法2
Iterator it = list.iterator();
while(it.hasNext()){
System.out.println(it.next());
}
//方法3
for(String temp:list){
System.out.println(temp);
}

倾向于第二种，网上测试貌似也是第二种较好