java.io小結

java io(對於其中的close方法，PrintStream和PrintWriter是不需要捕獲的)
Reader下面有：BufferedReader、CharArrayReader、FilterReader、InputStreamReader、PipedReader、StringReader
Writer與Reader相反
InputStream下面：常用的：FileInputStream,ByteArrayInputStream,FilterInputStream(子類PrintStream),ObjectInputStream,PipedInputStream等
OutputStream與InputStream相反
System.in是個InputStream類
節點流：
類型 字節流 字符流
文件 FileInputStream/FileOutputStream FileReader/FileWriter
Memory Array ByteArrayInputStream/ByteArrayOutputStream CharArrayReader/CharArrayWriter
Memory String StringReader/StringWriter
pipe PipedInputStream/PipedOutputStream PipedReader/PipedWriter

處理流類型： 字節流 字符流
Buffering BufferedInputStream/BufferedOutputStream BufferedReader/BufferedWriter
構造函數參數（InputStream,OutputStream） 構造函數參數（Reader,Writer）
Filtering FilterInputStream……同上
Converting between InputStreamReader/OutputStreamWriter
bytes and character 字節轉字符 構造函數參數（InputStream，OutputStream）
Object Serialization ObjectInputStream/OutputStream
Data conversion DataInputStream/OutputStream
Printing PrintStream 參數:OutputStream PrintWriter 參數:OutputStream、Writer
從控制檯獲取信息：BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
從文件獲取信息：BufferedReader br = new BufferedReader(new FileReader("filepath"));
從socket獲取信息:DataInputStream di =new DataInputStream(socket.getInputStream());(TCP)