Why do i get this error?

Question

Hi
When i run my code i get this exception,
java.lang.ClassCastException: java.lang.Integer
at has33.main(has33.java:29)
Why is it that i get this exception?
And could some help me so that i doun't get this Exception?
thanks
nicky
import java.io.*;
import java.lang.*;
import java.util.*;
public class has33{
public static void main(String[] args) {
Hashtable ht = new Hashtable();
//Add vector to store results
Vector results = new Vector();
Object value = null;
int keys[] = {1,2,3,4,5,6,7,8,9,10};
//System.out.println(keys);
String values[] = {"ben", "ben", "alex", "alex", "matt","matt", "mum", "mum", "dad", "matt"};
// First, map keys to values in a hashtable
Hashtable hash = new Hashtable();
// the code matches values one by one for each of the keys
for(int i = 0; i < keys.length; i++) {
hash.put(new Integer(keys), values[i]);
// Then we find each value and remove it from the hashtable
for(int j = 0; j < values.length; j++) {
ht = (hash);
value = (values[j]);
Vector v = new Vector();
String token = null;
StringTokenizer st = null;
if( ht.containsValue( value )) {
Enumeration e = ht.keys();
while (e.hasMoreElements()) {
String tempkey = (String)e.nextElement();
String tempvalue = (String)ht.get(tempkey);
if (tempvalue.equals(value)) {
v.add(tempkey);
ht.remove(tempkey);

Answer 1

No i mean to put then strings and Integers in hashtable like this
                         hash.put(new Integer(1), ben);
                         hash.put(new Integer(2), ben);
                         hash.put(new Integer(3), alex);
                         hash.put(new Integer(4), alex);
                         hash.put(new Integer(5), matt);
                         hash.put(new Integer(6), matt);
                         hash.put(new Integer(7), ben);
                         hash.put(new Integer(8), matt);
                         hash.put(new Integer(9), dad);
                                        hash.put(new Integer(10), dad);thanks
nicky