IO
From Suhrid.net Wiki
Basic Classes
- The File class is an abstract representation of files and directory pathnames. It works at a higher level, cant be used to read/write data.
- FileReader - read character levels - variety of read() methods. Usually wrapped in a BufferedReader.
- BufferedReader - Reads large chunks of files and keeps it in the buffer. Subsequent requests are got from the buffer thus minimizing the number of times time intensive file IO is performed.
- Similarly:
- FileWriter - write to character files.
- BufferedWriter - Keeps data in buffer and writes large chunks of buffer to file at once, minimizing file IO.
- PrintWriter - Has a lot of convenience methods and constructors (takes a File or String etc). Methods like format(), printf() and append() make PrintWriters powerful.
- Remember:
- For Characters - Reader and Writer classes are used.
- For Bytes - Stream classes are used.
