Branch Testing Problem

Rate Scale 

There are two inputs to the program which are found on the customer's utility bill: the Baseline Quantity and Actual Usage.

     1	/**
     2	 * UtilBill models a utility bill.
     3	 */
     4	public class UtilBill
     5	{
     6	    // formatter to currency format
     7	    java.text.DecimalFormat df = new java.text.DecimalFormat("00.##");
     8	    
     9	    // format a double value as currency with two decimal places.
    10	    private String toFixed(double value)
    11	    {
    12	        return df.format(Math.floor(100*value)/100);
    13	    }
    14	      
    15	    /** Calculate the utility bill */
    16	    public String doCalcs(double baseline, double actualUsage)
    17	    {
    18	        // Reset all working variables to zero
    19	        double C = 0;
    20	        double G = 0;
    21	        double K = 0;
    22	        double O = 0;
    23	        double P = 0;
    24	        
    25	        //  Compute usage at each of the different tiers
    26	        //      Baseline usage or below
    27	        if ( baseline > actualUsage )
    28	        {
    29	            C = actualUsage;
    30	        }
    31	        else
    32	        {
    33	            C = baseline;
    34	            // Tier 2 usage
    35	            double D = 1.3 * baseline;
    36	            double E = actualUsage - baseline;
    37	            double F = D - baseline;
    38	            if (E > F)
    39	                G = F;
    40	            else
    41	                G = E;
    42	            // Tier 3 usage
    43	            if (actualUsage > D)
    44	            {
    45	               double H = 2 * baseline;
    46	               double I = actualUsage - D;
    47	               double J = H - D;
    48	               if (I > J)
    49	                   K = J;
    50	               else
    51	                   K = I;
    52	               // Tier 4 usage
    53	               if (actualUsage > H)
    54	               {
    55	                   double L = 3 * baseline;
    56	                   double M = actualUsage - H;
    57	                   double N = L - H;
    58	                   if (M > N)
    59	                       O = N;
    60	                   else
    61	                       O = M;
    62	                   // Tier 5 usage
    63	                   if (actualUsage > L)   
    64	                   {
    65	                       P = actualUsage - L;
    66	                   }
    67	                }
    68	            }               
    69	        }
    70	        
    71	        // compute total of costs at all tiers
    72	        return  toFixed(C * .1301 + G * .1516 + K * .1966 + O 
    73	                          * .2366 + P * .2594);
    74	    
    75	    } // end doCalcs
    76	    
    77	    // Get the command line args and do the calculations
    78	    public static void main(String args[])
    79	    {
    80	    
    81	       double Actual=0.0;
    82	       double Baseline=0.0;
    83	       try
    84	       {
    85	        // Obtain input values from the HTML form
    86	          Baseline = new Double (args[0]);
    87	          Actual = new Double(args[1]);
    88	       }
    89	       catch (Exception ex)
    90	       {
    91	            System.out.println("arguments not formatted properly");
    92	            System.exit(1);
    93	        }
    94	       // validate user input
    95	       if (Actual < 0 || Baseline < 0)
    96	       {
    97	            System.out.println("arguments not formatted properly");
    98	       }
    99	       else
   100	       {
   101	            UtilBill app = new UtilBill();
   102	            String result = app.doCalcs(Baseline, Actual);
   103	            System.out.println("\t\tTotal: $" + result);
   104	       }
   105	    
   106	    }
   107	    
   108	}