Here you can find the source of getRandomDigits(Random r, int l, int radix)
public static String getRandomDigits(Random r, int l, int radix)
//package com.java2s; /*/* w ww . ja v a 2 s .c o m*/ * jPOS Project [http://jpos.org] * Copyright (C) 2000-2019 jPOS Software SRL * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License as * published by the Free Software Foundation, either version 3 of the * License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Affero General Public License for more details. * * You should have received a copy of the GNU Affero General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ import java.util.*; public class Main { public static String getRandomDigits(Random r, int l, int radix) { StringBuilder sb = new StringBuilder(); for (int i = 0; i < l; i++) { sb.append(r.nextInt(radix)); } return sb.toString(); } }