Learning Java IO indexes

　　I/O Streams, it simplifies I/O operations, write a whole object out to stream & read back. File I/O and file system operations, including random access files.

　　Classes about I/O Streams most are in java.io, about File I/O are in java.nio.file.

　I/O Streams:

• Byte Streams: raw binary data
• Character Streams: character data, auto translation from/to local charset
• Buffered  Streams: opt I/O by reducing calls to native API
• Scanning and Formatting: read/write formattedly
• I/O from the Command Line
• Data Streams: binary I/O of primitive data type & String Values
• Object Streams: binary I/O of objects

File I/O (Featuring NIO.2)

• What is a Path?: tells concept of a path in a given OS
• The Path Class: intro of the cornerstorne class of package java.nio.file
• Path Operations: intro to methods of Path class
• File Operations: intro to concepts common to many of the file i/o methods
• Checking a File or Directory: methods to check file existence & accessibility
• Delete/Copy/Move a File/Directory: intros to methods
• Managing Metadata: methods to read/set file attributes
• Reading, Writing, Creating Files: stream/channel methods for r/w files
• Random Access Files: method to r/w file in a non-sequentially manner
• Creating/Reading Dir: API of dirs, such as ls/dir/mkdir in shell
• Links, Symbolic or Otherwise: methods of symbolics/hard links
• Waling the File Tree: methods behaves like for /r in cmd
• Finding Files: use pattern matching to search for files
• Watching a Dir for Changes: how to use watch service to detect files adding/removing/updating in 1 or more dirs
• Other Useful Methods: APIs not mentioned
• Legacy File I/O Code: .. to update from legacy java.io.File class, a table mapping java.io.File to java.nio.file provided