转载： https://blog.csdn.net/nightcurtis/article/details/51324105
| 分类 | 字节输入流 | 字节输出流 | 字符输入流 | 字符输出流 |
|---|---|---|---|---|
| 抽象基类 | InputStream | OutputStream | Reader | Writer |
| 访问文件 | FileInputStream | FileOutputStream | FileReader | FileWriter |
| 访问数组 | ByteArrayInputStream | ByteArrayOutputStream | CharArrayReader | CharArrayWriter |
| 访问管道 | PipedInputStream | PipedOutputStream | PipedReader | PipedWriter |
| 访问字符串 | StringReader | StringWriter | ||
| 缓冲流 | BufferedInputStream | BufferedOutputStream | BufferedReader | BufferedWriter |
| 转换流 | InputStreamReader | OutputStreamWriter | ||
| 对象流 | ObjectInputStream | ObjectOutputStream | ||
| 抽象基类 | FilterInputStream | FilterOutputStream | FilterReader | FilterWriter |
| 打印流 | PrintStream | PrintWriter | ||
| 推回输入流 | PushbackInputStream | PushbackReader | ||
| 特殊流 | DataInputStream | DataOutputStream |