Java Error

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Java

Hi,

I am getting an error while running my code,.

I deserialised a list with few objects in it and am trying to access these objects;

Iterator iterate = list.iterator();
    while(iterate.hasNext()) {
        Student student = (Student) iterate.next();
        if(a == (int)student.roll_no) {
            try {
                System.out.println("Re-enter your roll no. :  ");
                a = Integer.parseInt(br.readLine());
            }
            catch(Exception e) {
                e.printStackTrace();
            }
        }

But it is not able to cast the simple int "rollno" field with another int value;

I am getting the following Exception

Exception in thread "main" java.lang.ClassCastException: java.lang.Integer cannot be cast to com.Student

Regards
Nakul Kundra