Remove Linked List Elements

/**
 * Definition for singly-linked list.
 * public class ListNode {
 *     int val;
 *     ListNode next;
 *     ListNode() {}
 *     ListNode(int val) { this.val = val; }
 *     ListNode(int val, ListNode next) { this.val = val; this.next = next; }
 * }
 */
class Solution {
     public ListNode removeElements(ListNode head, int val) {
        ListNode res = new ListNode(0);
        res.next = head;
        ListNode cur = res;
        while (cur != null && cur.next != null) {
            if (cur.next.val == val)
                cur.next = cur.next.next;
            else
                cur = cur.next;
        }
        return res.next;
    }
}