This question is based on Java environment. Thank you so much for help

Consider a program that manages an appointment calendar. Should it place the appointments into a list, stack, queue, or priority queue? Explain your answer. 1. Explain what the following code prints. Draw a picture of the linked list after each step 2. LinkedListString staff = new LinkedList(); staff.addFirst("Bob"); staff.addLast("Jane"), staff.addFirst("Mary"); System.out.println(staff.removeLast)) System.out.println(staff.removeFirst()); System.out.println(staff.removeLast()); 3. Explain what the following code prints. Draw a picture of the linked list and the iterator position after each step. Linked List staff = new LinkedList(); ListIterator iterator -staff.listIterator iterator.add("Bob"; iterator.add ("Jane"; iterator.add("Mar"; iteratorstaff.listIterator (); if (iterator.next().equals("Bob")) f iterator.remove); while (iterator.hasNext ()) System.out.println(iterator.next))