import java.util.*;
import java.io.*;

class  MenuDriven
{
    publicstaticvoid main(String args[]) 
    {
         Vector itemList = new Vector();
          String str,item;
          int i,j,len,choice,pos;
           
           len=args.length;
          for(i=0;i<len;i++)
              itemList.addElement(args[i]);
          
          while(true)
          {
               System.out.println("\n\nChoose your choice ...");
               System.out.println("1) Delete  Item");
               System.out.println("2) Add Item at Specified Location ");
               System.out.println("3) Add Item at  the End of the list");
               System.out.println("4) Print Vector List ");
               System.out.println("5) Exit");
               System.out.print("Enter your choice : ");
               System.out.flush();
               try{
                   BufferedReader obj = new BufferedReader(new InputStreamReader(System.in));
                   str=obj.readLine();
                   choice=Integer.parseInt(str);
                   switch(choice)
                   {
                       case 1 :    System.out.print("Enter Item you want to delete : ");
                                           str=obj.readLine();
                                        itemList.removeElement(str);  //string is not needed to convert object type as it
                                                                                          //is already object of class String
                                        break;
                      case 2 :     System.out.print("Enter Item to be Insert : ");
                                        System.out.flush();
                                        item=obj.readLine();
                                        System.out.print("Enter Position to insert item : ");
                                        str=obj.readLine();
                                        pos=Integer.parseInt(str);
                                        itemList.insertElementAt(item,pos-1);
                                        break;
                      case 3 :     System.out.print("Enter Item to be Insert : ");
                                        System.out.flush();
                                        item=obj.readLine();
                                        itemList.addElement(item);
                                        break;
                     case 4 :      len=itemList.size();
                                        System.out.println("\nItem Display ");
                                        for(i=0;i<len;i++)
                                        {
                                               System.out.println((i+1)+") "+itemList.elementAt(i));
                                        }
                                        break;
                      case 5 :     System.out.println("\n\nThank You for using this software.....");
                                        System.exit(1);
                                        break;
                      default :     System.out.println("\nEntered Choice is Invalid\nTry Again\n");
                    }
                }
            catch(Exception e) {}
         }      
    }
}