This seems ok for the job. There should be some speedups if you need them.
Cheers
// --- cut ---
public class GenID {
private static String validChars =
"ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890";
private int _IDlength;
public GenID(int IDlength) {
_IDlength = IDlength;
}
public String generate() {
String resultID = "";
int maxIndex = validChars.length();
java.util.Random rnd = new java.util.Random();
for ( int i = 0 ; i < _IDlength ; i++ ) {
int rndPos = Math.abs(rnd.nextInt() % maxIndex);
resultID += validChars.charAt(rndPos);
}
return resultID;
}
}
// --- cut ---
-----Original Message-----
From: Cato, Christopher [mailto:[EMAIL PROTECTED]]
Sent: Thursday, March 01, 2001 2:05 PM
To: '[EMAIL PROTECTED]'
Subject: Generating a random alphanumeric string
Hello, can anyone show me an example or give me a clue about how
to generate a random alphanumeric string of lets say 16-32 chars?
TomCat is obviously doing it for the session ids, but how would I
do the same in a servlet?
Regards,
Christopher Cato
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