DES not found problem in servlet

Hi
I have a problem of using DES in servlet
The exception is No such algorithm. Algorithm DES not found.
I research this for quite some 48 hours
its similar to the problem here
http://forum.java.sun.com/thread.jsp?thread=482363&forum=9&message=2251103
The big problem is i can run on standalone, cannot run on servlet and following the guide on the link at java sun also does not seem to help.
Below is my class file to encrypt. I run this on java web service developer pack JWSDP1_0_01. Please help anybody?
import java.net.*;
import java.io.*;
import java.security.*;
import javax.crypto.*;
public class Crypto {
public Crypto(){
Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider());
Security.addProvider(new com.sun.crypto.provider.SunJCE());
}

public byte[] Encrypt(String arg){

String err="";
byte[] ciphertext = null;
if(arg!=null){
try{

byte[] plaintext = arg.getBytes("UTF8");
KeyGenerator keyGen = KeyGenerator.getInstance("DES");
keyGen.init(56);
Key key = keyGen.generateKey();

Cipher cipher = Cipher.getInstance("DES/ECB/PKCS5Padding");
cipher.init(Cipher.ENCRYPT_MODE, key);
ciphertext = cipher.doFinal(plaintext);
}
catch(Exception exp){
err=exp.toString();
());
}
}
return ciphertext;
}

i just found out that i have 2 compiler in my pc. the setpath for java_home is pointing to jdk1.4. The compiler i m using is jdk1.3.1 . could this be the problem. thanks

Hi rollin,
Did u solve the problem? I am getting the same error for "blowfish" algorithm. I have a EJB running on WL7 trying to encrypt the user password using blowfish algorithm. when i keep the jce1_2_2.jar in server's classpath, everything works fine. However, if i remove it from there i get the same exception.
Can u help me in this regard?
[ April 29, 2004: Message edited by: Rashmi Tambe ]