InputStream与OutputStream

https://blog.csdn.net/dlwh_123/article/details/35982015

 

BufferedReader in = new BufferedReader(new InputStreamReader(new FileInputStream("infilename")));
不管你从磁盘读，从网络读，或者从键盘读，读到内存，就是InputStream。

写文件
BufferedWriter out = new BufferedWriter(new OutputStreamWriter(new FileOutputStream("outfilename")));
不管你写倒磁盘，写到网络，或者写到屏幕，都是OuputStream。