List三种循环方式
public static void main(String[] args) { List<String> list=new ArrayList<String>(); list.add("123"); list.add("456"); list.add("789"); System.out.println("------经典的for循环-----"); for (int i = 0; i < list.size(); i++) { System.out.println(list.get(i)); } System.out.println("-------Iterate循环--------"); Iterator<String> iter=list.iterator(); while(iter.hasNext()) { System.out.println(iter.next()); } System.out.println("-------foreach循环---------"); for (String string : list) { System.out.println(string); }}