Java IO

字节流

InputStream

OutputStream

BufferedInputStream

BufferedOutputStream

字符流

Reader

Writer

FileReader

FileWriter

BufferedInputSream bis=new BufferedInputStream(new FileInputStream("abc.txt"));

BufferedOutputStream bos= new BufferedOutputStream (new FileOutputStream("Copy.txt"));

int len;

while((len=bis.read())!=-1){

bos.Write(len);

}

bos.close();

bos.close();