Generating alphanumeric string

Question

Hi,
I'm new to java programming and
I was wondering if anyone could help.
I need to generate an alphanumeric string
consisting of one uppercase letter and 4 digits.
Ant help gratefully received

Answer 1

import java.util.Random;
public class Test {
  private static final char[] uppercaseLetters = { 'A', 'B', 'C', 'D', 'E', 'F',
    'G', 'H', 'J', 'K', 'L', 'M', 'N', 'P', 'R', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z' };
  public Test() {
    final StringBuffer sb = new StringBuffer();
    sb.append(uppercaseLetters[(int)(Math.random() * uppercaseLetters.length)]);
    for (int i = 0; i < 4; i++) sb.append((int)(Math.random() * 10));
    System.out.println(sb);
  public static void main(String[] args) {
    new Test();
}