public static String generateToken(int length) {
StringBuffer token = new StringBuffer();
for (int i = 0; i < length; i++) {
int rand = sr.nextInt(26 * 2 + 10);
if (rand < 10) {
public static String generateToken(int length) {
StringBuffer token = new StringBuffer();
for (int i = 0; i < length; i++) {
int rand = sr.nextInt(26 * 2 + 10);
if (rand < 10) {