java 随机生成的手机号码

package com.cw.bigdata.generatedata; import java.util.Random; /** * @author 陈小哥cw * @date 2020/12/22 9:10 */ public class RandomPhoneNumber { //中国移动 public static final String[] CHINA_MOBILE = { "134", "135", "136", "137", "138", "139", "150", "151", "152", "157", "158", "159", "182", "183", "184", "187", "188", "178", "147", "172", "198" }; //中国联通 public static final String[] CHINA_UNICOM = { "130", "131", "132", "145", "155", "156", "166", "171", "175", "176", "185", "186", "166" }; //中国电信 public static final String[] CHINA_TELECOME = { "133", "149", "153", "173", "177", "180", "181", "189", "199" }; /** * 生成手机号 * * @param op 0 移动 1 联通 2 电信 */ public static String createMobile(int op) { StringBuilder sb = new StringBuilder(); Random random = new Random(); String mobile01;//手机号前三位 int temp; switch (op) { case 0: mobile01 = CHINA_MOBILE[random.nextInt(CHINA_MOBILE.length)]; break; case 1: mobile01 = CHINA_UNICOM[random.nextInt(CHINA_UNICOM.length)]; break; case 2: mobile01 = CHINA_TELECOME[random.nextInt(CHINA_TELECOME.length)]; break; default: mobile01 = "op标志位有误！"; break; } if (mobile01.length() > 3) { return mobile01; } sb.append(mobile01); //生成手机号后8位 for (int i = 0; i < 8; i++) { temp = random.nextInt(10); sb.append(temp); } return sb.toString(); } public static void main(String[] args) { Random random = new Random(); StringBuilder sb = new StringBuilder(); for (int i = 1; i <= 10; i++) { int op = random.nextInt(3);//随机运营商标志位 sb.append(createMobile(op)); if (i % 10 == 0) { sb.append("\n"); } else { sb.append("\t"); } } System.out.println(sb.toString()); } }