Java tutorial
//package com.java2s; //License from project: Open Source License import java.util.Random; public class Main { static String generateHoodieId() { int hoodieIDLength = 7; String alphabet = "0123456789abcdefghijklmnopqrstuvwxyz"; int alphabetLength = alphabet.length(); String result = ""; Random rnd = new Random(); for (int i = 0; i < hoodieIDLength; i++) { int r = rnd.nextInt(alphabetLength); char c = alphabet.charAt(r); result += c; } return result; } }