File Ascii (text) file vs binary file Opening a file Closing a file White space

Exception Throwing an Exception Catching an Exception try-catch Delimiter

Topics:

• Reading ascii text files using the Scanner and File classes
• Writing to ascii text files using the PrintWriter class
• Opening and closing
• Binary data (anything other than ascii, e.g. images) - can't be represented on a console
• Checking for more data using in.hasNextInt(), in.hasNextDouble(). These return a boolean value.
• Reading words (tokens) vs lines using next()
• Converting Strings to numbers, e.g. using Double.parseDouble, Integer.parseInt()
• Exception Handling; Dealing with errors; How to gracefully survive a crash.
  • Throwing an exception
  • Catching an exception; Catching multiple exception types
  • Types of Exceptions - see Javadoc for the Exception class
  • The finally clause - cleaning up no matter what happens, e.g. closing a file

In Class Practice Activities