Jonathan Spiker
CS239-3 Lab 4

Lab: Experimenting with Input/Output

3.3. What was the first error generated by the compiler?

Rooter.java:15: cannot find symbol
symbol  : class PrintWriter
location: class Rooter
       PrintWriter     screen;       
       ^

The PrintWriter class was not imported so it could not be used.

3.4. What line did you need to add?

import java.io.*;

3.6. What was the first error generated by the compiler this time?

Rooter.java:17: cannot find symbol
symbol  : class Scanner
location: class Rooter
       Scanner         keyboard;
       ^
The Scanner class was not imported so it could not be used.

3.7.  Fix this error.  What line did you need to add?

import java.util.Scanner;

4.4. Why was no output generated?

The buffer has not been flushed.


4.5. Fix this mistake.  What line did you add?

screen.flush();


4.6. What do you need to type in the terminal window (as a response to
the prompt) in order to make this application terminate normally?

Ctrl + V


5.4. What output was generated?

Today's Date: 22 January 2007
	Birthday: Sir Francis Bacon
	Birthday: George Foreman

5.6. What happened and why?

The file specified could not be found because it was not in the working directory.

5.8 What changes did you need to make?

I added a line after the today and name object declarations:
File dates;

5.10. What changes did you need to make?

I added two lines to the instantiation section:
name = args[0];
dates = new File(name);

5.12. What changes did you need to make?

I replaced the System.in for the Scanner with dates to use the command lin argument file.
I also had to use a try catch block to catch the possible FileNotFoundException

          
5.14. What output was generated?

Today's Date: 22 January 2007
	Birthday: Sir Francis Bacon
	Birthday: George Foreman

6.2. What changes did you need to make?

I created two sets of objects for all the input and output classes,
then edited processDates to process each file instead of just one.
          
6.4. What output was generated?

Today's Date: 23 January 2007
	Birthday: Chita Rivera
	Birthday: John Hancock
          
No other information was printed because there was not and assignment for the 23rd.