Your Name ANSWER KEY  


Lab: Experimenting with Input/Output

Part 2

2.4 What output was generated?

Today's Date: 28 January 2009
	Birthday: Elijah Wood
	Birthday: Alan Alda

2.6 What occurred and why?

This error message was generated.
-bash: anniversarys.txt: No such file or directory

The command shell could not find the file anniversarys.txt
and so did not execute the program.  

2.8 What code did you need to add?  
		 File dates;
		 
2.10 What did you need to add?

		 if (args.length > 0)
		 	dates = new File(args[0]);
		 else
		 {
		 	dates = null; // make the compiler happy
			System.out.println("No file provided.  Exiting.");
			System.exit(1);
		 }
	NOTE: You could have initialized dates to null before the 
	if statement if you preferred.
	
2.13 What error message did you get?

Remember.java:30: unreported exception java.io.FileNotFoundException; 
 must be caught or declared to be thrown
dateScanner = new Scanner(dates);

2.16 What changes did you need to make?

		 try
		 {
    		  dateScanner = new Scanner(dates);
		 }
		 catch (FileNotFoundException fnfe)
		 {
		 	System.out.printf("File, %s, not found.  Exiting.",
			 dates.getName()); 
			System.exit(2);
		 }

          
2.18 What output was generated?

Today's Date: 28 January 2009
	Birthday: Elijah Wood
	Birthday: Alan Alda


Part 3

3.2 What changes did you need to make?
  
  		Moved the header to the top.
		Inside if, added a for loop to process all of the files.
		If a bad file name, then exited the program.
		See full program for the code.  
	 
3.4 What output was generated?

  Today's Date: 28 January 2009
	Birthday: Elijah Wood
	Birthday: Alan Alda
	Review the Java tutorial on Exceptions
	Work on PA 1