Please convert this to pseudocode having trouble understanding it

Its java that adds two linked lists together that are numbers

// Java program to add two numbers

// represented by linked list

class LinkedList {

static Node head1, head2;

static class Node {

int data;

Node next;

Node(int d)

{

data = d;

next = null;

}

}

/* Adds contents of two linked

lists and return the head node

of resultant list */

Node addTwoLists(Node first, Node second)

{

// res is head node of the resultant list

Node res = null;

Node prev = null;

Node temp = null;

int carry = 0, sum;

// while both lists exist

while (first != null || second != null) {

// Calculate value of next

// digit in resultant list.

// The next digit is sum

// of following things

// (i) Carry

// (ii) Next digit of first

// list (if there is a next digit)

// (ii) Next digit of second

// list (if there is a next digit)

sum = carry + (first != null ? first.data : 0)

+ (second != null ? second.data : 0);

// update carry for next calulation

carry = (sum >= 10) ? 1 : 0;

// update sum if it is greater than 10

sum = sum % 10;

// Create a new node with sum as data

temp = new Node(sum);

// if this is the first node then set

// it as head of the resultant list

if (res == null) {

res = temp;

}

// If this is not the first

// node then connect it to the rest.

else {

prev.next = temp;

}

// Set prev for next insertion

prev = temp;

// Move first and second pointers

// to next nodes

if (first != null) {

first = first.next;

}

if (second != null) {

second = second.next;

}

}

if (carry > 0) {

temp.next = new Node(carry);

}

// return head of the resultant list

return res;

}

/* Utility function to print a linked list */

void printList(Node head)

{

while (head != null) {

System.out.print(head.data + " ");

head = head.next;

}

System.out.println("");

}

// Driver Code

public static void main(String[] args)

{

LinkedList list = new LinkedList();

// creating first list

list.head1 = new Node(7);

list.head1.next = new Node(5);

list.head1.next.next = new Node(9);

list.head1.next.next.next = new Node(4);

list.head1.next.next.next.next = new Node(6);

System.out.print("First List is ");

list.printList(head1);

// creating seconnd list

list.head2 = new Node(8);

list.head2.next = new Node(4);

System.out.print("Second List is ");

list.printList(head2);

// add the two lists and see the result

Node rs = list.addTwoLists(head1, head2);

System.out.print("Resultant List is ");

list.printList(rs);

}

}