Remove Linked List Elements - LeetCode

Remove all elements from a linked list of integers that have value val.

Example:

Input:  1->2->6->3->4->5->6, val = 6
Output: 1->2->3->4->5

Java Solution :

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