java生成随机uuid并保存到文件

import java.io.*;

import java.util.UUID;

public class Uuid {

public static void main(String[]args){

File file=new File("uuid.txt");

if(!file.exists()){

try{

file.createNewFile();

FileOutputStream out=new FileOutputStream(file);

String uuid="";

for(int i=0;i<10000;i++){

uuid=UUID.randomUUID().toString().replaceAll("-", "")+"\r\n";

out.write(uuid.getBytes());

}

out.close();

}catch(Exception e){

e.printStackTrace();

}

}

}

}