Java I/O - 如何使用BufferedOutputStream将字节数组写入文件

import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;

public class Main {

  public static void main(String[] args) throws Exception {
    FileOutputStream fos = new FileOutputStream(new File("C:/Demo"));
    BufferedOutputStream bos = new BufferedOutputStream(fos);
    bos.write("this is a test".getBytes());
    bos.flush();
    bos.close();
  }
}