Problem with remove method

Question

Hi:
I have written a Calendar program that will add appointments and then print the appointment list. I need to write code to remove selected appointments. How do I make reference to the appointment objects I created in the test portion of my program so that I can remove them with the removeApp method(code not written yet)?
Describes a calendar for a set of appointments.
@version 1.0
import java.util.Vector;
public class CalendarTest
{  public static void main(String[] args)
     Calendar markCalendar = new Calendar("Mark");
     markCalendar.addApp(new Appointment("June 1","3pm","4pm", "dentist"));
      markCalendar.addApp(new Appointment("June 2","3pm","4pm", "doctor"));
     markCalendar.print();
      //markCalendar.removeAppz(Appointment(1));does not work
Describes a calendar for a set of appointments.
class Calendar
  Constructs a calendar for the person named.
  public Calendar(String aName)
  {  name = aName;
     appointments = new Vector();
  Adds an appointment to this Calendar.
  @param anApp The appointment to add.
  public void addApp(Appointment anApp)
     appointments.add(anApp);
  Removes an appointment from this Calendar.
  @param anApp The appointment to be removed.
  public void removeApp(Appointment anApp)
     appointments.remove(anApp);//does not work
  Prints the Calendar.
  public void print()
  {  System.out.println(name + "               C A L E N D A R");
     System.out.println();
      System.out.println("Date   Starttime    EndTime   Appointment");
     System.out.println("vector size" + appointments.size());
     appointments.remove(0);
     for (int i = 0; i < appointments.size(); i++)
     {  Appointment nextApp =(Appointment) appointments.get(i);
        nextApp.print();
  private Vector appointments;
  private String name;
  private Appointment theAppointment;
Describes an appointment.
class Appointment
  public Appointment(String aDate,String aStarttime,String aEndtime, String aApp)
  {  date = aDate;
     starttime = aStarttime;
      endtime = aEndtime;  
     app = aApp;
  Prints the Date, Starttime, Endtime and a description of the
  appointment.
  public void print()  
  {  System.out.println();
     System.out.println(date + "   " + starttime + "          " + endtime
         + "       " + app );
     System.out.println();
  private String date;
  private String starttime;
  private String endtime;
  private String app;

Answer 1

//markCalendar.removeAppz(Appointment(1));
Will not work, what object are you trying to pass to your method?
I assume you want to remove an Appointment from appointments?
You could make the Vector appointments public and use markCalendar.appointments(1) or make a method to return the Vector and then choose an Appoinment to pass to your removeApp() method.