Random Characters
As part of some coding I am doing for the website, I required a method of generating a random 10 character string from numbers and uppercase characters. I wanted to only restrict to those characters which didn't look like other characters, so a simply random plus ASCII '0' was out of the question. The solution is however quite simple. We just create a String with all of the characters we want to use, and select a random character from that String,
String charset = "2346789ABCDEFGHJKMNPQRTWXZ";
StringBuffer sb = new StringBuffer(10);
for (int i = 0; i < 10; i++) {
sb.append(charset.charAt((int)(Math.random()*charset.length())));
}
String code = sb.toString();
