java - How will this code affect a linked list? -

i have code , want make sure understand how affect linked list. coded , printed first number of list in case 4. list [4,7,1,7,2,0], code make list become [4].

node x = head;  while (x != null) {   while ((x.next != null) && (x.next.item >= x.item)) {       x.next = x.next.next;   }    x = x.next; }  

i'm not sure i'm understanding why, , that's if code correct. given code presumably i'm supposed understand without coding it.

i suspect that:

x.next = x.next.next; 

should

x = x.next;