Java Programming

Hi friends,

I have defined one class

  public class UserRegistration {
    String first_name = null;
    String last_name = null;
    String dobd = null;
    String dobm = null;
    String doby = null;
    String gender = null;
    String occupation = null;
    String marital_status = null;


public String getFirst_name()
    {
       return this.first_name;
    }
   public String getLast_name()
    {
       return this.last_name;
    }
   public String getDobd()
    {
       return this.dobd;
    }
   public String getDobm()
    {
       return this.dobm;
    }
   public String getDoby()
    {
       return this.doby;
    }
 
   ..................
   ....................
} 

and I have instantiated this class in a different class but so far I can access fields of UserRegistration class like this way
UserRegistration object = new UserRegistration();

String str = object.first_name;

It shows that I cant use this object as an aaray like
String str = object[0] ;

My intention is to use this UserRegistration's object as an array so that I can iterate through its fields using a loop not by using its fields name and a dot operator manually.

How to convert this object to and String array?