随机产生虚拟*Util

import java.util.Random;

/**
 * Created by IntelliJ IDEA
 * 这是一个神奇的Class
 *
 * @author zhz
 * @date 2020/3/26 13:37
 */
public class PhoneNumberUtil {
    /**
     * 获取手机头3位
     * @param type
     * @return
     */
    public static String getHeadMobile(Integer type){
        switch (type) {
            case 1:
                return "130";
            case 2:
                return "131";
            case 3:
                return "132";
            case 4:
                return "133";
            case 5:
                return "134";
            case 6:
                return "135";
            case 7:
                return "136";
            case 8:
                return "137";
            case 9:
                return "138";
            case 10:
                return "139";
            case 11:
                return "150";
            case 12:
                return "151";
            case 13:
                return "152";
            case 14:
                return "153";
            case 15:
                return "155";
            case 16:
                return "156";
            case 17:
                return "157";
            case 18:
                return "158";
            case 19:
                return "159";
            case 20:
                return "177";
            case 21:
                return "186";
            case 22:
                return "183";
            case 23:
                return "187";
            case 24:
                return "188";
            case 25:
                return "189";
            default:
                return "173";
        }
    }

    /**
     * 获取尾号4位
     * @return
     */
    public static String getEndMobile(){
        String ychar = "0,1,2,3,4,5,6,7,8,9";
        int wei = 4;
        String[] ychars = ychar.split(",");
        String endMobile = "";
        Random rdm = new Random();
        for (int i = 0; i < wei; i++) {
            int j = (rdm.nextInt() >>> 1) % 10;
            if (j > 10) {
                j = 0;
            }
            endMobile = endMobile + ychars[j];
        }
        return endMobile;

    }

    public static void main(String[] args) {
        for (int i = 0; i <= 10; i++) {
            Integer headRandom=new Random().nextInt(25);
            String mobile = getHeadMobile(headRandom) + getEndMobile() + getEndMobile();
            System.out.println(mobile);
        }
    }

}

运行结果：

参考： https://blog.csdn.net/Solder_Sun/article/details/81359662