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SortedList implements Serializable

SortedList implements Serializable

SortedList implements Serializable

(OP)
I am using JDK 1.2 on IBM comp. machine for this project.

The project is to create a sorted list from a bunch of instances of a class called Student. Student consists of Student_number, and student name. Another class called SortedList has a method "insert", which does the sorting.

eg. of bunch
//this is in the test.java class
SortedList s = new SortedList();
s.insert(7, new Student(7, "Jack"));
s.insert(1, new Student(1, "Helen"));
s.insert(9, new Student(9, "Moris"));
s.insert(3, new Student(3, "Buddy"));

//SortedList class has method "insert", which contains the
//following arguments:
public void insert(long key, Object stu)

//the interface Sortable is implemented in the Student class
interface Sortable {
boolean compare(Object current, Object next);
}

//Now,
class Student implements Serializable, Sortable
//and
class SortedList extends SLList implements Serializable {
//SLList = Singly-Linked List (non-circular)

The question is why do I get this compilation message:
"Interface Serializable of class SLList not found.", when SLList is
also implemented with the interface Serializable?

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