Question

THIS CODE SHOULD BE MODIFIED TO READ SuperMarket.dat instead of Inputting and Outputting.
SuperMarket.dat

Monday
4
Monday
6
Monday
2
Tuesday
3
Tuesday
2
Wednesday
3
Wednesday
5
Wednesday
7
Thursday
5
Friday
4
Friday
3
Friday
4
Saturday
8
Saturday
8
Saturday
8
Sunday
0

QUESTION:
Write the control break code, including the code for the dayChange() method, in the main() method.
// SuperMarket.java - This program creates a report that lists weekly hours worked 
// by employees of a supermarket. The report lists total hours for 
// each day of one week. 
// Input:  Interactive
// Output: Report. 

import javax.swing.*;


public class SuperMarket
{
        public static void main(String args[]) 
        {
                // Declare variables.
                final String HEAD1 = "WEEKLY HOURS WORKED";
                final String DAY_FOOTER = "          Day Total ";  // Leading spaces are intentional.
                final String SENTINEL = "done";         // Named constant for sentinel value. 
                double hoursWorked = 0;                 // Current record hours.
                String hoursWorkedString = "";          // String version of hours
                String dayOfWeek;                       // Current record day of week.
                double hoursTotal = 0;                  // Hours total for a day.
                String prevDay = "";                    // Previous day of week.
                boolean done = false;                           // loop control

                // Print two blank lines.
                System.out.println(); 
                System.out.println(); 
                // Print heading.
                System.out.println(HEAD1);
                // Print two blank lines.
                System.out.println(); 
                System.out.println(); 

                // Read first record 
                dayOfWeek = JOptionPane.showInputDialog("Enter day of week or done to quit: ");
                if(dayOfWeek.compareTo(SENTINEL) == 0)
                        done = true;
                else
                {
                        hoursWorkedString = JOptionPane.showInputDialog("Enter hours worked: ");
                        hoursWorked = Integer.parseInt(hoursWorkedString); 
                        prevDay = dayOfWeek;
                }
                
                   
                while(done == false)
                {       
                        // Implement control break logic here
                        // Include work done in the dayChange() method
                }
        
                System.out.println(DAY_FOOTER + hoursTotal);
                                        
                System.exit(0);

        } // End of main() method.
        
} // End of SuperMarket class.