java IO 类概述表

列举常用的类方便查看，温故知新！

	byte input	byte output	character input	character output
Basic	InputStream	OutputStream	InputStreamReader	OutputStreamWriter
Array	ByteArrayInputStream	ByteArrayOutputStream	CharArrayReader	CharArrayWriter
File	FileInputStream	FileOutputStream	FileReader	FileWriter
Piped	PipedInputStream	PipedOutputStream	PipedReader	PipedWriter
Buffered	BufferedInputStream	BufferedOutputStream	BufferedReader	BufferedWriter
Filter	FilterInputStream	FilterOutputStream	FilterReader	FilterWriter
String			StringReader	StringWriter
Data	DataInputStream	DataOutputStream
Object	ObjectInputStream	ObjectOutputStream