please solve the 2 of them using java

Problem Msert a node at a specific position in a linked list. Write a method that inserts a node at a specific position of the singly linked list. A position of o indicates head, a position of 1 indicates one node away from the head and so on. The head node may be null meaning that the initial list is empty. As an example, if your list starts as 1 -> 2 - > 3 and you want to insert a node at position 2 with element = 4, your new list should be 1->2->4->3 Public void insertAtPos( E e, int position) Problem 2: Write a method called printList() and add it to class Singly LinkedList. This method is used to output the elements of the linked list. Then write a main program to create a linked list and test the printList method above (sample output is shown below) Output - SL Problem1 (run) Calling syList.addrizst (10) Calling myList.addlast (20) Calling my ist.addFirss (30) Printing list