class cast exception

[srikanth sridhar]

Hi All,

I am trying to develop a simple travel application using Struts and I'm stuck up with conversion of Java String array into object.

I am using split to convert the string into string array and then i need that string array converted to an object of a pojo.

My error is
Caused by: java.lang.ClassCastException: java.lang.String cannot be cast to com.mytravels.pojo.booking.SeatsBlocking

I am stuck up here from past 2 days..

[Shankh Pani Parimal]

Need to poper Casting of Object

 String[] String_Array = {"spp_1", "spp_2", "spp_3", "spp_4", "spp_5", "spp_6"};

      Object[] Object_Array =new Object[String_Array.length]; 
	    
	  Object Obj =new Object(); 

          //String Array to Object Array
        Object_Array=(Object[]) String_Array;
		 //Array Object to Object  
        Obj = Object_Array;
         //Object to Object Array
       Object_Array = (Object[]) Obj;
	
        
		  for(int i=0;i<5;i++){
			System.out.println(Object_Array[i]);
		  }

its Work fine.

[srikanth sridhar]

Thanks for quick reply Shankh Pani.

It din't help me. Sorry let me clarify my problem to you.
My code is
selectedSeatNos = StringUtil.split(bookingsForm.getSeatNos(), AppConstants.COMMA);
results=Arrays.asList(selectedSeatNos);
List<SeatsBlocking> seatNos= new ArrayList<SeatsBlocking>(results);
blocking.setSeatNos(results.toString());
bookingsForm.setSeatRecords(seatNos);

here the results is a array list which i need to set to a list of type SeatsBlocking.
This is where actually i am getting error... Please let me know if there is a problem in my code..

[Praveen Kumar M K]

srikanth sridhar wrote:

List<SeatsBlocking> seatNos= new ArrayList<SeatsBlocking>(results);

You can't do that. SeatsBlocking and String are two different types and I assume there is no relationship between them. Both your lists, results as well as seatNos are already typified as String list and SeatsBlocking list so Java's strong type checking wont allow that.

[srikanth sridhar]

Hi Barney,

yes you are right. But is there any solution to it.?

It will be a great help..

[Praveen Kumar M K]

Ok so you have a String list called results from which you want to make a list of SeatsBlocking. Why don't you loop through results and create as many SeatsBlocking objects as there are in results list. Probably you can assign each element of result into a member within SeatsBlocking instance.

[srikanth sridhar]

barney,

I tried as you said. But i am not able to create the objects as you said.

Could you please help me in doing so..

Waiting for your reply..

[Tim Moores]

srikanth sridhar wrote:But i am not able to create the objects as you said.

Why not? What did you try, and how did it not work?

[srikanth sridhar]

I did this way

String selectedSeatNos[] = StringUtil.split(bookingsForm.getSeatNos(), AppConstants.COMMA);
for (int i = 0; i < selectedSeatNos.length; i++) {
blocking.setSeatNos(selectedSeatNos[i]);
blockedSeatNos.add(blocking);
bookingsForm.setRecordList(blockedSeatNos);
}

[Tim Moores]

And what was the problem with that?

[James Boswell]

Where is the local variable blocking defined? It should be set to a new instance of SeatsBlocking within the for loop.
Also, the line

bookingsForm.setRecordList(blockedSeatNos);

should be outside and after the for loop when all entries have been added to blockedSeatNos.

[srikanth sridhar]

Thank you. the problem is solved..
Thanks a lot for all your replies..