Having trouble with downcasting exercise

I am having trouble getting the student portion of my test program to work.

this is the student class file:

//java 2 11.2
//by jeff taddei
//create student class

   class Student extends Person {
   
      private static int FRESHMAN = 1;
      private static int SOPHOMORE = 2;
      private static int JUNIOR = 3;
      private static int SENIOR = 4;
      private int status;
   
      public Student() {
      }
   	
      public Student(int status) {
         this.status = status;
      }
   	
      public Student(String name, String address, String phone, String email, int status){
         super(name, address, phone, email);
         this.status = status;
      }
   	
      public String toString() {
         return "Student: "+  this.getName() + "\nStatus: " + status + "\n" +
            this.getAddress() + this.getphoneNumber() + this.getEmail();
      }
   }

and this is the test program.

//java 2 11.2
//by jeff taddei
//create Person test program

  
   import javax.swing.JOptionPane;
   public class TestPerson {
   
      public static void main(String[] args) {
         Person[] person = new Person[5];
      	
         person[0] = new Person(" Jeff Taddei ", "511 North 5th St. ", " 910-233-1234 ", " taddej@yahoo.com ");
         
         person[1] = new Student(" Big Bird ", "223 Seasame St. ", " 910-222-3456 ", " bbird@yahoo.com ", "Freshman");
         
         person[2] = new Employee( " Johnny Walker ", "55 Scotch St. ", " 910-555-5555 ", " jwalker@sip.com ", "9am-5pm", 1000);
         MyDate date2 = new MyDate(1, 11, 2012);
      	
         person[3] = new Faculty(" Billy Bob ", "23 Red St. ", " 910-333-1235 ", " bbob@holler.com ", " 9am-5pm ", 2);
      	
         person[4] = new Staff(" Barney Rubble ", "10 BC St. ", " 910-333-4569 ", " brubble@stone.com ", " Janitor ");
           	
      				
         for (int i=0; i<person.length; ++i){
         	
            if (person[i] instanceof Person){
            
               JOptionPane.showMessageDialog (null, ((Person)person[i]).toString(), "Personal Information", JOptionPane.INFORMATION_MESSAGE);		
                        
            }
            else if (person[i] instanceof Student){
            
               JOptionPane.showMessageDialog (null, ((Student)person[i]).toString(), "Personal Information", JOptionPane.INFORMATION_MESSAGE);
                       
            }
              
            else if (person[i] instanceof Employee){
            
               JOptionPane.showMessageDialog (null, ((Employee)person[i]).toString(), "Personal Information", JOptionPane.INFORMATION_MESSAGE);
            
            
            }
            else if (person[i] instanceof Faculty){
            
               JOptionPane.showMessageDialog (null, ((Faculty)person[i]).toString(), "Personal Information", JOptionPane.INFORMATION_MESSAGE);
            }
            else if (person[i] instanceof Staff){
               JOptionPane.showMessageDialog (null, ((Staff)person[i]).toString(), "Personal Information", JOptionPane.INFORMATION_MESSAGE);
            
            }
         }	
      	
               }		
   	
   }