- FileInputStream-FileOutputStream 文件數據讀寫
- ObjectInputStream-ObjectOutputStream 對象數據讀寫
- ByteArrayInputStream-ByteArrayOutputStream 內存字節數組讀寫
- PipedInputStream-PipedOutputStream 管道輸入輸出
- FilterInputStream-FilterOutputStream 過濾輸入輸出數據流
- InputStreamReader-OutputStreamWriter 字節流轉字符流
- FileReader-FileWriter 文件字符輸入輸出流
- BufferedReader-BufferedWriter 帶緩沖的字符輸入輸出流