IO流 1.字符流 1.1 Reader 1.2 Writer 1.1.1 BufferedReader 字符缓冲输入流 1.2.1 BufferedWrite 1.1.2 InputSreamReader - FileReader 1.2.2OutputStream Writer - FileWrite 1.1.3 StringReader 1.2.3 StringWriter 1.1.4 PipedReader 1.2.4 PipedWriter 1.1.5 CharReader 1.2.5 CharWriter 1.1.6 FilterReader - PushbackReader 1.2.6 FilterWriter 1.1.7 1.2.7 PrintWriter 2.字节流 1 InputStream 2 OutputStream 1.1 FileInputStream 2.1 FileoutputStream 1.2 FilterInputStream 2.2 FilterOutputStream 1.2.1 BufferedInputStream 2.2.1 BufferedOutputStream 1.2.2 DataInputStream 2.2.2 DataOutputStream 1.2.3 PushbackInputStream 2.2.3 PrintStream 1.3 ObjectInputStream 2.3 ObjectOutputStream 1.4 ByteArrayInputStream 2.4 ByteArrayOutputSteam