package iie.udps.test;

import java.io.BufferedWriter;

import java.io.File;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.OutputStreamWriter;

import java.util.Random;

public class test {

	public static void main(String[] args) throws IOException {

		File file = new File("/mnt/sdd1/data/test.txt");

		if (!file.exists()) {

			file.createNewFile();

		}

		FileOutputStream fos = new FileOutputStream(file);

		OutputStreamWriter osw = new OutputStreamWriter(fos, "utf-8");

		BufferedWriter out = new BufferedWriter(osw);

		Random r = new Random(); 

		long i = 0L;

		while(i<3000000000L){

			i++;

			out.write(Integer.toString(r.nextInt(1000)));

			out.write(",");

			out.write(Integer.toString(r.nextInt(1000)));

			out.write(",");

			out.write(Integer.toString(r.nextInt(1000)));

			out.newLine();

			if(i%100000 ==0){

				out.flush();

			}

		}

		out.close();

		System.out.println("数据生成到"+file);

	}

}