Lab: Experimenting with Input/Output
toufic Arabi


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

the first error was:
Rooter.java:19: cannot find symbol
symbol  : class PrintWriter
location: class Rooter
       PrintWriter     screen;   

3.4. What line did you need to add?

the line that i had to add is : import java.io.PrintWriter;

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

Rooter.java:21: cannot find symbol
symbol  : class Scanner
location: class Rooter
       Scanner         keyboard;
       ^

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

the line that i added is: import java.util.Scanner;


4.4. Why was no output generated?

there was no output that was generated since the string Enter a number:
was stored and stuck in the buffer memory. there was no command to pass it 
to the screen to show it to the user.

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

the line that i added is : 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 + z makes the application terminate normally.

5.4. What output was generated?

the program generated the following output;
Today's Date: 22 January 2007
        Birthday: Sir Francis Bacon
        Birthday: George Foreman


5.6. What happened and why?
the program ended because no such file could be found

5.8 What changes did you need to make?

the change is the follwing declaration
File dates;

5.10. What changes did you need to make?

i ran birthdays.txt in the command line argument
the code that i had to add is:
dates = new File (args[0]);

5.12. What changes did you need to make?
the changes are:
	try
	{
         dateScanner = new Scanner(dates);
	}
		
	catch (FileNotFoundException fnfe) 
	{
	  System.out.print("The file that was passed is not found " +
		 	  fnfe.getMessage() + "\n");	
	}

       
5.14. What output was generated?
the output is:
Today's Date: 22 January 2007
        Birthday: Sir Francis Bacon
        Birthday: George Foreman          

6.2. What changes did you need to make?
the changes that i had to make are:	
	try
	{
		 
	for (int count = 0; count < args.length; count++)
	{
	 dates = new File (args[count]);
         dateScanner = new Scanner(dates);
	 processDates(today);
	}
		 		
	}


          
6.4. What output was generated?

     Today's Date: 22 January 2007
        Birthday: Sir Francis Bacon
        Birthday: George Foreman
        Programming Assignment 1 Due
        Review the Java tutorial on Exceptions