I need this in java using textpad. I am missing a few lineswhere I added in comments. I don't know what I need to add in. Hereare the two programs as pasteable code.The comments in the code saywhat I need done. The two programs are below.

public class ListDemoHw {    public static void printLinkedList(SLLNode node) {        // display all elements in the linked list        while(node != null) {            System.out.print(node.info + \" \");            node = node.next; // move to the next node        }            System.out.println();    }    static SLLNode generateLL1() {        // Create/return a linked list that has {3, 4, 1, 2}        // Note that this is not quite a useful function. Just for practice purpose    }    static SLLNode generateLL2(int a, int b) {        // Create/return a linked list that has {a, b, a, b}        // eg) generateLL2(10,20) returns a list {10,20,10,20}    }    static SLLNode generateLL_with_array(int[] nums) {        // Creat/return a linked list using the given int array        // Return null if the array is empty (size is zero).        // eg) generateLL3(new int[]{2,3,4}) returns a list {2,3,4}    }    static void attach(SLLNode ls1, SLLNode ls2) {        // Given two linked lists, attach the second list at the end of the first list        // eg) Suppose ls1={1,2,3}, ls2={50,60} as lists, attach(ls1, ls2) makes ls1 = {1,2,3,50,60}        // Assume ls1 is not empty.        // Hint: You need to go to the last node of ls1 and make a connection from it to the ls2    }    public static void main(String[] args) {        printLinkedList(generateLL1()); // 3 4 1 2        printLinkedList(generateLL2(20,30)); // 20 30 20 30        printLinkedList(generateLL_with_array(new int[] {2})); // 2        printLinkedList(generateLL_with_array(new int[] {2,3,4,5})); // 2 3 4 5        SLLNode ls1 = generateLL1();        attach(ls1,generateLL2(20,30));        printLinkedList(ls1); // 3 4 1 2 20 30 20 30    }}

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public class SLLNode {    E info;    SLLNode next;    public SLLNode(E val) {        info = val;        next = null;    }}