下列哪个选项定义了带有缓存的文件字节输入流 A: BufferedInputStream bis = new BufferedInputStream(new FileInputStream(...)); B: BufferedOutputStream bos = new BufferedOutputStream(new FileInputStream(...)); C: FileInputStream fis = new FileInputStream(new BufferedInputStream(...)); D: FileOutputStream fis = new FileOutputStream(new BufferedOutputStream(...));

下列属于文件输入输出类的是（ ）。 A: FileInputStream和FileOutputStream B: 选项ABC都对 C: PipedInputStream和PipedOutputStream D: BufferedInputStream和BufferedOutputStream

实现字符流的写操作类是(),实现字符流的读操作类是() A: Writer、FileReader B: Writer、FileInputStream C: FileInputStream、Writer D: FileInputStream、FileOutputStream

以下属于基于字符的文件流类的是 A: FileInputStream B: FileOutputStream C: FileReader D: FileWriter

下列流中,()是文件字符输出流 A: FileWriter B: FileReader C: FileInputStream D: FileOutputStream