Remove Linked List elements

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

Example
Given: 1 --> 2 --> 6 --> 3 --> 4 --> 5 --> 6, val = 6
Return: 1 --> 2 --> 3 --> 4 --> 5

Solution

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

        while(p.next != null) {
            if(p.next.val == val)
                p.next = p.next.next;
            else
                p = p.next;
        }

        return dummy.next;
    }
}