Runtime Error: field “val” because “.next” is null (Linked list reversal error) [duplicate]
This question already has answers here: What is a NullPointerException, and how do I fix it? (12 answers) Closed 3 days ago. This post was edited and submitted for review 2 days ago. The prev.next.val is working fine inside the while loop but if I print the same outside it gives error. I am not […]