프로그래밍갤에 프로그램 질문해서미안한데

  String name, phoneNumber;
  StudentBook stuList;
  stuList = new StudentBook(100);

  stuList.add("김김김", "123-456-5678");

  while(true) {
   displayMenu();
   menuNum=input.nextInt();
   switch(menuNum)

   {
   case 1 :
    System.out.println("< 추가 >");
    System.out.println("이름: ");
    name = input.next();
    System.out.println("전화번호: ");
    ph>    stuList.add(name, phoneNumber);