COP 3337
  Section U05
  Spring 2017

                            HOMEWORK # 4
                            ============

                                   Due: Wednesday, March 22nd, 2017 



     Write a program that prompts the user to enter the name of
  an input text file using the JOptionPane as input.
  If the file cannot be open, the program prints an error message and 
  prompts the user to enter the name of another file. If this name 
  is wrong again it gives him/her a last chance to enter a correct
  file name. After 3 failed tries the program prints an error message
  on the monitor and exits. 

  If the program was able to open the input file, it prompts the user 
  through the JOPtionPane to enter the name of the output file. 
  Again it gives him/her 3 chances to get it right. After 3 failed 
  file names, the program prints an error message, closes 
  the input file file and exits. 

    Otherwise the program processes every line of the input file 
  as follows. If the input line has two strings like

  Pepe Garcia

  the program writes the line

  P. Garcia

  on the output page.

  If the input line does not have 2 words ( it may be 0, 1, 3, or more)
  the program prints the contents of the line on the System.out file
  and states that this file does not have the format word1 word2.