FileOutputStream和BufferedOutputStream基础测试

对文件IO中的FileOutputStream和BufferedOutputStream进行了一个基础的测试：
对相同的数据循环写10秒，然后看输出文件的大小。

测试代码如下：

package com.myspringboot.io.file;


import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.util.concurrent.TimeUnit;

public class FileIO {

    private static final byte[] DATA = "123456789n".getBytes();
    private static final String PATH = "D:\javatest\out.txt";

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

        Thread thread = new Thread(() -> {

            try {
                testBasicFileIO(); // 100M左右
//                testBufferedFileIO(); // 1G左右
            } catch (Exception e) {
                e.printStackTrace();
            }

        });
        thread.setDaemon(true);
        thread.start();
        // 运行10秒后，结束程序
        TimeUnit.SECONDS.sleep(10);
        System.out.println("结束");
    }


    //最基本的file写
    public static void testBasicFileIO() throws Exception {
        File file = new File(PATH);
        FileOutputStream out = new FileOutputStream(file);
        while (true) {
            out.write(DATA);
        }
    }

    //测试buffer文件IO
    //  jvm  8kB   syscall  write(8KBbyte[])
    public static void testBufferedFileIO() throws Exception {
        File file = new File(PATH);
        BufferedOutputStream out = new BufferedOutputStream(new FileOutputStream(file));
        while (true) {
            out.write(DATA);
        }
    }
}