private static String RandomAdminId() {
String str = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"; String strIndex = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"; StringBuffer strB = new StringBuffer(""); int index = (int) (51 * Math.random()); strB.append(strIndex.charAt(index)); for (int i = 0; i <= 4; i++) { int j = (int) (61 * Math.random()); strB.append(str.charAt(j)); } return strB.toString(); }