Files

• What is a File?
• Why do we use Files?
• How we use Files in our programs?
  1. Open
  2. Read/Write
  3. Close
• Different kinds of Files?
  • Binary Files
  • Text Files

Different kinds of Files

• Text Files:
  • Characters
  • .txt, .xml, .html, ...
• Binary Files:
  • Bytes
  • .zip, .exe, .pdf, .docx, ...

Characters in Java

• Unicode
• Problems in ASCII.
• The Unicode standard is a character set.
• Characters are saved as numbers.
• What is encoding?
• UTF-8, UTF-16, UTF-32
  • The default for Java is UTF-16.

 
Streams...
 

• What is a Stream?
  • Save or restore from a File.
  • Send data over a network to another program.
  • Communicate with devices like monitors, printers, ...
• IO = Input / Output
• Import java.io library to work with Files and Streams.

Streams...