java 字节流 转换为 字符流

java 字节流 转换为 字符流

    OutputStream os=new FileOutputStream("");
  OutputStreamWriter osr=new OutputStreamWriter(os);
  BufferedWriter bw=new BufferedWriter(osr);
    
    InputStream is = new FileInputStream("");
  InputStreamReader isr=new InputStreamReader(is);
  BufferedReader br=new BufferedReader(isr);