hi all

I have written a controller for inserting bulk appointments. Actually the objective is i have created an appointment object in which i have two fields FROM and TO. I have taken these fields into another visual force page.Now user goes to that visual force page and enters the from and to timings.For ex:user want bulk appoitments from 1 o clock to 3 then in from field he enters 1 and to field he enters 3. and he will get bulk appointments from 1:00,1:10 1:20 so on upto 2:50. for this i have written the following controller

public class ExtTwo
{
public ExtTwo(ApexPages.StandardController controller) 
{ 
userInputAppointment = new Appointment__c();

}
public Appointment__c userInputAppointment {get; set;}
public list<appointment__c> apps {get;set;}  
public list<appointment__c> apps1 {get;set;}  
public list<appointment__c> apps2 {get;set;}
public list<appointment__c> apps3 {get;set;}
public list<appointment__c> apps4 {get;set;}
public list<appointment__c> apps5 {get;set;}

public PageReference save()
{
apps = new list<appointment__c>();
apps1 = new list<appointment__c>();
apps2 = new list<appointment__c>();
apps3 = new list<appointment__c>();
apps4 = new list<appointment__c>();
apps5 = new list<appointment__c>();
integer i=integer.valueof(userInputAppointment.from__c);          
integer i1=integer.valueof(userInputAppointment.To__c);
integer i2=integer.valueof(userInputAppointment.from_min__c);
integer i3=integer.valueof(userInputAppointment.To_Min__c);

if(i<i1)
{ 
for(integer k=0;k<(60-i2)/10;k++)
{
appointment__c ap = new appointment__c();
ap.branch__c =  userInputAppointment.branch__c;
ap.account__c = userInputAppointment.Account__c;
ap.doctor__c=userInputAppointment.doctor__c;
ap.appt_date__c = userInputAppointment.appt_date__c;
ap.Appt_AM_PM__c= 'AM';
if(integer.valueof(userInputAppointment.from__c)>=12)
{
ap.Appt_AM_PM__c= 'PM';
}
ap.Appt_Hour__c =String.valueOf(integer.valueof(userInputAppointment.from__c));
if(integer.valueof(userInputAppointment.from__c)>12)
{
ap.Appt_Hour__c =String.valueOf(integer.valueof(userInputAppointment.from__c)-12);
}
ap.Appt_Minute__c = userInputAppointment.from_min__c;
ap.RecordTypeid=userInputAppointment.RecordTypeid;
if(i2!=integer.valueof(userInputAppointment.from_min__c))
{
ap.RecordTypeid='012N0000000CgSu';
}
apps1.add(ap);
}
insert apps1[0];

and now u see i have declared userinputappointment as a value that is taken from the user . now i have written the test case li8ke this for my controller

@isTest
private class extwoTestclass
{

static testmethod void TestController() 
{
Staff__c s1 = new Staff__c();
      s1.name='Rahul';
      s1.Mobile__c='9849098490';
      insert s1;

Branch__c b = new Branch__c();
b.Name = 'Test';
b.Region__c = 'Market Price';
insert b;

Account a = new Account ();
a.LastName = 'Test';
a.Branch__c = b.id;
a.PersonMobilePhone = '9550412970';
insert a ;

       Appointment__c app = new Appointment__c();
        app.from__c='6';
        app.account__c=a.id;
        app.from_min__c = '00';
        app.Appt_AM_PM__c='PM';
        app.Appt_Date__c=date.ValueOf('2011-05-21');
        app.Appt_Hour__c='9';
        app.Appt_Minute__c='80';
        app.RecordTypeid='012N0000000CgZ2';
        app.Branch__c=b.id;
        app.to_Min__c='40';
        app.to__c='7';       
        insert app;
 
  
  
  
ApexPages.currentPage().getParameters().put('id', app.id);
  

        ApexPages.StandardController con = new ApexPages.StandardController(app); 
       
            ExtTwo cs = new ExtTwo(con);    
        
        pagereference s7 = cs.save();
   
    } 
    
 
}

now i am getting this error system.null pointer expression.Class.ExtTwo.save: line 24, column 27 Class.extwoTestclass.TestController: line 60, column 28 External entry point

now this error indicatres in my controller the userinputappointment.from__c and all fields are taking null values plz help me in writing the test case for my code