Way2Java

View All IO

S. Nageswara Rao, Corporate Trainer

Advise for a fresher

Do not expect command on Java I/O Streams overnight. It is ocean, until and unless not properly approached, it leaves in a very great confusion, of course without pointers (feeling of when you lost alone in an unknown forest). It is a ocean due to number of classes, and these classes are given to make your programming easy (not to confuse you). I feel the following is a better way to penetrate into Java Input/Output Tutorial; follow the following order of reading.

    A) General Programs
  1. Java I/O Streams – Overview
  2. Byte streams and Character streams
  3. Byte streams vs Character streams
  4. Semantics of File Copying
  5. Performance drawbacks of file copying
  6. BufferedInputStream and BufferedOutputStream
  7. Chaining of Streams
  8. DataInputStream and DataOutputStream – File Copying
  9. Skipping a part of a File

    10. Keyboard Input (Scanf in Java)

  10. Keyboard Input – DataInputStream
  11. Keyboard Input – BufferedReader
  12. Keyboard Input – Scanner – No parsing
  13. Scanner – Checking for Tokens

  14. SequenceInputStream – Merging Files
  15. ByteArrayInputStream
  16. ByteArrayOutputStream
  17. StringBufferInputStream
  18. Using markSupported(), mark() & reset()
  19. PrintStream
  20. Filter Streams in java.io Package
  21. Giving Line Numbers – LineNumberInputStream
  22. File Copying – FileReader & FileWriter
  23. BufferedReader & BufferedWriter
  24. CharArrayWriter – Storing Data
  25. StringReader
  26. StringWriter – Storing Data
  27. CharArrayReader – Reading from Character Array
  28. PrintWriter – Formatting Data
  29. PushbackReader – Pushing out Character
  30. Using OutputStreamWriter
  31. RandomAccessFile – Reading Sequentially and Randomly
  32. LineNumberReader – Giving Line Numbers
  33. PipedInputStream and PipedOutputStream

  34. File class – Retrieving Metadata of File
  35. File class – Changing File Properties

  36. StreamTokenizer – Tokenizing a Stream

  37. Performance tips in file copying
    B) Compare and Contrast I/O classes. Important for Interviews.
  1. Byte streams vs Character streams
  2. PrintStream vs PrintWriter
  3. StringWriter vs StringBuilder
  4. StreamTokenizer vs StringTokenizer
    C) Miscellaneous increasing your programming skills.
  1. System.out.println()?
  2. What is System.in?
  3. Closeable and Flushable interfaces
  4. Number of Lines in a File
  5. Reading and writing arrays and strings
  6. Wrapper Streams
  7. Filter Streams
  8. Byte streams vs Character streams