向imooc.txt文件写入数据失败

我的存放路径

我的代码：

package com.imooc.file;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

public class BufferedDemo {

 @SuppressWarnings("unused")
 public static void main(String[] args) {
  //写入文件
  try {
   FileOutputStream fos = new FileOutputStream("imooc.txt");
  //和文件输出流进行连接
   BufferedOutputStream bos = new BufferedOutputStream(fos);
   FileInputStream fis = new FileInputStream("imooc.txt");
   BufferedInputStream bis = new BufferedInputStream(fis);
   bos.write(50);
   bos.write('a');
   bos.flush();
   bos.close();
  } catch (FileNotFoundException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }catch(IOException e) {
   e.printStackTrace();
  }
  

 }

}