随机电话号码

编写

package com.job2_26random;

import java.util.Random;

/**
 *     随机电话号码
 * @author Administrator
 *
 */
public class PhoneNumber {
    public static void main(String[] args) {
        //创建随机对象
        Random random=new Random();

        //循环输出号码
        System.out.println("随机号码");
        for(int i=0;i<9;i++) {
            int num;
            System.out.print("1"+(random.nextInt(7)+3));
            do {
                num=random.nextInt();
                if(num>100000000&&num<1000000000) {
                    System.out.println(num);
                }
            }while(!(num>100000000&&num<1000000000));
        }
    }
}

运行