List集合的四种迭代方法

//1、集合元素的索引查找for (int i = 0; i < list.size(); i++) { System.out.println(list.get(i));}//2、增强for循环for (String str : list) { System.out.println(str);}//3、使用Iterator 迭代器进行Iterator it = list.iterator();while (it.hasNext()) { System.out.println(it.next());}//4、迭代：通过ListIterator迭代，也可向前迭代的ListIterator listIt = list.listIterator();//ListIterator正向迭代while (listIt.hasNext()) { System.out.println(listIt.next());} // 指针已经到末尾了//ListIterator反向迭代while (listIt.hasPrevious()) { System.out.println(listIt.previous());}