// Exercise 4.18 Solution: Analysis.java
// Program performs analysis of examination results.

// Java extension packages
import javax.swing.JOptionPane;

public class Analysis {

   // main method begins execution of Java application
   public static void main( String args[] )
   {
      // initializing variables in declarations
      int passes = 0, failures = 0, student = 1, result;
      String input, output;

      // process 10 students; counter-controlled loop
      while ( student <= 10 ) {
         input = JOptionPane.showInputDialog(
            "Enter result (1=pass,2=fail): " );

         result = Integer.parseInt( input );

         if ( result == 1 ) {     // if/else nested in while
            passes++;
            student++;
         }

         else if ( result == 2 ) {
            failures++;
            student++;
         }

         else
            JOptionPane.showMessageDialog( null, "Invalid Input",
               "Error", JOptionPane.ERROR_MESSAGE );
      }

      output = "Passed: " + passes + "\nFailed: " + failures;

      if ( passes > 8 )
         output += "\nRaise tuition ";

      JOptionPane.showMessageDialog( null, output,
         "Results", JOptionPane.INFORMATION_MESSAGE );

      System.exit( 0 );

   }  // end method main

}  // end class Analysis