Delete Last Node (Head not not given) LInked Lists

public void deleteLast(){
 //check if this is the last node
 if(this.next == null) {
  this = null;
  return;
 }
 
 //look 2 nodes ahead to see if we have reached the end
 Node temp = this;
 while(temp.next.next != null){
  temp = temp.next;
 }
 
 //Finally, move to last node and set it null
 temp = temp.next;
 temp = null;
}