Java随机生成手机号码

mengheeh · 发表于 2020-11-5 08:43

Java小白用Java代码写了个随机生成手机号的，现在分享出来，

import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.IOException;
import java.util.HashSet;
import java.util.Random;
import java.util.Scanner;
public class Test02 {
private static String[] str={"180","189","187","188","181","182","165","134","135"
,"136","137","138","139","150"
,"151","152","157","158","159"
,"130","131","132","155"
,"156","133","153"};
private static Scanner scanner=new Scanner(System.in);
public static void main(String[] args) {
System.out.println("欢迎使用手机号码生成，下面是使用说明书");
while (true){
System.out.println("[1]生成手机号，[2]退出");
int num=scanner.nextInt();
if (num==1){
System.out.println("请输入您想生成的手机号码个数:");
HashSet<String> set=generateRandomMobileNumber(scanner.nextInt());
System.out.println("是否需要将生成的手机号输出至指定目录？是 or 否 ");
try {
judged(scanner.next(),set);
System.out.println("请选择接下来的操作");
} catch (IOException e) {
e.printStackTrace();
}
}else if (num==2){
System.exit(0);
}else {
System.out.println("输入错误，请仔细阅读使用说明。");
}
}
}
private static void judged(String s,HashSet<String> set) throws IOException {
if ("是".equals(s)){
System.out.println("请输入指定目录，例：D:\\temp.txt");
output(scanner.next(),set);
}else if ("否".equals(s)){
return;
}else{
System.out.println("输入错误，请输入是 or 否 ");
}
}
private static void output(String catalog,HashSet<String> set) throws IOException {
BufferedWriter bufferedWriter =new BufferedWriter(new FileWriter(catalog,true));
for (String s:set) {
bufferedWriter.write("蚂蚁森林:"+s+"\n");
}
bufferedWriter.flush();
bufferedWriter.close();
}
private static HashSet<String> generateRandomMobileNumber(int num) {
Random random=new Random();
HashSet<String> set=new HashSet<>();
while (set.size()<num){
String s=str[random.nextInt(str.length)]+"";
for (int i = 0; i <8 ; i++) {
s+=random.nextInt(10);
}
set.add(s);
}
return set;
}
}

复制代码

我是学霸 · 发表于 2020-11-5 09:23

支持楼主，谢谢分享。

kings3001 · 发表于 2020-11-5 09:27

谢谢大佬分享

clzh · 发表于 2020-11-5 09:29

谢谢楼主分享，先收藏了。

chixinyang · 发表于 2020-11-5 09:29

6666

sishutk · 发表于 2020-11-5 09:30

谢谢大佬

1827088 · 发表于 2020-11-5 10:53

6666666666

a1247366751 · 发表于 2020-11-5 14:12

多谢楼主分享

cena_ccccc · 发表于 2020-11-5 14:40

谢谢@Thanks！

2316361 · 发表于 2020-11-6 03:08

谢谢分享

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