Trying to understand serialization basics

Question

im getting a error messege in my test class
file load errorjava.lang.ClassCastException: java.lang.String
why would i be getting java.lang.string as a error if im trying to return a object
the load methods not working right but it seemed to save fine
can anyone tell me what im doing wrong
heres my full test applet
import java.util.Vector;
import java.io.*;
// ill serialize a vector here
public class SerilizationUsage extends Frame implements Serializable
Vector v = new Vector();
Vector vec;
A a;
int currentelement =0;
public SerilizationUsage(){
       a = new A();a.value = 2;
    v.addElement (a);
    a = (A) v.get (currentelement);
    System.out.println("v "+currentelement+"th elements value "+a.value);
    save();
    load();
public void save(){
try{
FileOutputStream out = new FileOutputStream("thevectordata");
ObjectOutputStream s = new ObjectOutputStream(out);
s.writeObject("v");
s.flush();
}catch (Exception e) {System.out.println("file save error"+e);}
public void load(){
try{
FileInputStream in = new FileInputStream("thevectordata");
ObjectInputStream s = new ObjectInputStream(in);
vec = (Vector)s.readObject();
}catch (Exception e) {System.out.println("file load error"+e);}
public static void main(String args[]){
System.out.println("Starting App");
SerilizationUsage f = new SerilizationUsage();
     System.exit(0);
class A{
int value;
public A(){value = 1;}
}

Answer 1

ah wait i didnt see i put "v" instead of v but now its giveing me a not serializable error
file save errorjava.io.NotSerializableException: A
file load errorjava.io.WriteAbortedException: Writing aborted by exception; java.io.NotSerializableException: A