Java基础 List集合的三种循环方式

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

public class ForeachTest02 {
    public static void main(String[] args) {
        List<String> list=new ArrayList<>();
        list.add("hello");
        list.add("world");
        list.add("kitty");
        //迭代器
        Iterator<String> it=list.iterator();
        while (it.hasNext()){
            System.out.println(it.next());
        }
        System.out.println('\n');
        //通过下标的for循环
        for (int i=0;i<list.size();i++){
            System.out.println(list.get(i));
        }
        System.out.println('\n');
        //增强for循环
        for (String str:list){
            System.out.println(str);
        }
    }
}