/* Program to compute test statistics for students
   illustrating several capabilities of the Scanner class
 */

package testScores;

import java.util.Scanner;
import java.io.FileReader;
import java.io.IOException;

public class TestScanner3
{
   public static void main (String args[])
   {   // identify name of file with test information
       String testFile = 
           "/home/walker/public_html/courses/207.sp13/readings/test.data";
        
       try  // try needed in case opening FileReader fails
       {
           // set up file reader for given data file
           FileReader fileReaderIn = new FileReader (testFile);
           // use FileReader object to initialize scanner
           Scanner fileIn = new Scanner (fileReaderIn);
             
           // declare variables for reading and for max and min
           int test1 = 0, test1max = 0, test1min = 0;
           int test2 = 0, test2max = 0, test2min = 0;
           int test3 = 0, test3max = 0, test3min = 0;
           boolean firstTime = true;
             
           //print headings
           System.out.println ("      Name                      Test");
           System.out.println ("First    Last\t\t  1 \t  2 \t  3      Average");  

           while (fileIn.hasNext())
           {
              // read subsequent parts of a name 
              // until the first test score is found
               String name = "";
               while (!fileIn.hasNextInt())  /* check if next is int */
               { // next item not an integer, concatenate to name
                   name += fileIn.next() + " "; 
               } 

               // add tab if name is short
               if (name.length() < 16)
                   name += "\t";

               // retrieve next items as integers
               test1 = fileIn.nextInt(); 
               test2 = fileIn.nextInt();
               test3 = fileIn.nextInt();
              if (firstTime)
                 {   // the first data read become 
                     //  initial max and min values
                     test1max = test1min = test1;
                     test2max = test2min = test2;
                     test3max = test3min = test3;
                     firstTime = false;
                 }
              else
                 {
                     if (test1max < test1)
                         test1max = test1;
                     if (test1min > test1)
                         test1min = test1;
                     if (test2max < test2)
                         test2max = test2;
                     if (test2min > test2)
                         test2min = test2;
                     if (test3max < test3)
                         test3max = test3;
                     if (test3min > test3)
                         test3min = test3;
                 }
              // compute average and print results for line
              double avg = (test1 + test2 + test3) / 3.0;
              System.out.printf ("%-17s\t%3d %7d %7d %10.2f\n",
                                 name, test1, test2, test3, avg);
         }
           // print concluding maximums and minimums
           System.out.printf ("\nMaximum \t%3d %7d %7d\n",
                                  test1max, test2max, test3max);
           System.out.printf ("Minimum  \t%3d %7d %7df\n",
                               test1min, test2min, test3min);
       }
       catch (IOException e)
           {   // identify any error that arises
               System.err.println (e);
           }
   }
}