java - java中的列表遍历

Question

如何在java中的数组列表中遍历......

即使我有向前移动的代码......

但我不能认为这是向后遍历..

ArrayList<String> al = new ArrayList<String>();
        al.add("Raj");
        al.add("Sameer");
        al.add("Nitu");
        al.add("Biren");
        al.add("Vishal");
        Iterator<String> it = al.iterator();
        System.out.println("Forward direction:-");
        while(it.hasNext())
        {
            System.out.println(it.next());
        }

Answer 1

您可以使用ListIterator:

System.out.println("Backward direction:-");
ListIterator<String> it = al.listIterator(al.size()); // this initializes the iterator to 
                                                      // point to the end of the list
while(it.hasPrevious())
{
    System.out.println(it.previous());
}