How to detect end of file when read serialized object from a file

No way to find EOF, Simply store object in a List (e.g. ArrayList, HashMap etc.) then serialize it and write into a file like below..

public class User implements Serializable{
String name;
String pass;

    public User(String name, String pass) {
        this.name = name;
        this.pass = pass;
    }

    public String getName() {
        return name;
    }

    public String getPass() {
        return pass;
    }
    public void display(){
        System.out.println(name+":"+pass);
    }

}

public class RecordReader {

    public static void main(String as[]) throws Exception{
        ObjectInputStream input=new ObjectInputStream(new FileInputStream("e:/u.txt"));        
        ArrayList u=(ArrayList)input.readObject();      
        Iterator i=u.iterator();
       System.out.println("Records are: ");
        while(i.hasNext()){
            User u1=(User)i.next();
            u1.display();
        }       
     
    }
}
public class RecordSaver {

    public static void main(String as[]) throws Exception{
        ArrayList list=new ArrayList();
        BufferedReader b=new BufferedReader(new InputStreamReader(System.in));
        ObjectOutputStream out=new ObjectOutputStream(new FileOutputStream("e:/u.txt"));      
         list.add(new User("raj","kumar"));
         list.add(new User("raju","jha"));
         out.writeObject(list);
         out.close();
        System.out.println("Record save successfully");
    }
}