Shopping List using a Vector

import java.util.Vector;
import java.util.Scanner;
class ShoppingItems{
    String name;
}
class vectors{
    public static void main(String[] args){
        Vector v = new Vector(5);
        ShoppingItems o = new ShoppingItems();
        int count = 0;
        while(true){
            System.out.print("\n1.Delete 2.Add at a position 3.Add at end 4.View the list 5.Exit: ");
            Scanner sc = new Scanner(System.in);
            switch(sc.nextInt()){
                case 1: System.out.print("Delete which index?: ");
                        try{
                            v.removeElementAt(sc.nextInt());
                            count--;
                        } catch(Exception e){
                            System.out.print("Enter a whole number less than "+count);
                        }
                        break;
                case 2: System.out.print("Insert where and what?: ");
                        try{
                            v.add(sc.nextInt(), o.name = sc.next());
                            count++;
                        } catch(Exception e){
                            System.out.print("Enter a whole number less than "+count);
                        }
                        break;
                case 3: System.out.print("Insert what?: ");
                        v.add(o.name = sc.next());
                        count++;
                        break;
                case 4: if(count == 0) System.out.println("The list is empty.");
                        else
                            for(int i = 0; i< count; i++)
                                System.out.println((i+1)+". "+v.elementAt(i));
                        break;
                case 5: return;
            }
        }
    }
}