Remove linked List elements with a given value

Question

I am trying to delete all those elements with a specific value. Here's my code. This code is not working. Can someone help me? TIA. Example Given: 1 --> 2 --> 6 --> 3 --> 4 --> 5 --> 6, val = 6 Return: 1 --> 2 --> 3 --> 4 --> 5

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 curr = head;
    ListNode prev = null;
    while(curr != null){

        if(curr.val == val){
            prev.next = curr.next; 
        }
        else{
            prev = curr;
          }
          curr = curr.next;
    }
    return head;
}
}