Problem:Assume that you have been hired at Oman Investment and Finance Co. SAOG (OIFC) to write a javaprogram that prints a summary of customers' bills for water and electricity. Each bill has type, accountnumber, consumption amount (kilowatt/gallon) and the month of the bill. Each bill charges an amountof 16.78 OMR as supply service charges. Electricity bill is either industrial or residential. The electricitytotal energy charge is computed based on the type of the usage. For industrial each kilowatt consumedcosts 12 Baisa while for residential it costs 10 Baisa per kilowatt consumed. The total amount is thesum of the energy charges plus the bill charges. Water bill applies different rates based on the waterconsumption where the first 5000 gallons cost 2 Baisa per gallon and any gallon more than 5000 costs2.5 Baisa. Water bill also includes sewage charges which is one third the water charges. The totalamount is the sum of the water charges, sewage charges and the bill charges.BillWaterElectricityAccording to the description above, you are asked to develop an OOP solution that includes thefollowing:[6.25 points] Class Bill which has:Variables to store bill information as described above.A constructor with parameters to initialize bill information.Accesor method for the consumption amount.getCharges() method that returns the supply service charges.Override toString( ) method to return a bill information line as shown in the sampleoutput. (Check Figure 2 below)[6.75 points] Class Water which has:A constructor with parameters to initialize a water bill information.Override the getCharges method to compute the total amount according to the descriptionabove.[5.75 points] Class Electricity which has:Variables to store whether the usage is industrial or residential.A constructor with parameters to initialize an electricity bill information.Override the getCharges method to compute the total amount according to the descriptionabove.Write the code for the tester class yourNameOIFC which has:[5.75 points] readBills method that accepts a scanner object and returns a list of bills. Itreads each line from the input file and construct the corresponding bill type.o [6 points] printBillsSummary method that accepts a list of bills and prints the summaryincluding the total charges as shown in the sample output (check Figure 2 below). Youshould replace the string "Ahmed" with your first name.[6.5 points] main method thatasks a user for input file namechecks whether the file existread from the input file objects of type Water or Electricity into an array list bycalling readBills. The line for water objects starts with "W" while for electricityobjects it starts with "E". Check Figure 1 for a sample input file, “bills.txt", whichis also available on Moodle.calls printBillsSummary method to print the output shown in Figure 2 after readingthe whole input file.Bonus (Optional) [1 point]: Print all water bills before the electricity bills as shown in Figure 3.A elearn.squ.edu.om WaterA bills.txtW, 12387844,January,4786E, 12387844, January, 3872,"YES"w, 86787642, March, 5876W, 77868213,April, 7342E, 89782421, March, 3982, "NO"w, 87981243, April,8231w, 98798273, February, 3283W, 12387844, March, 2787E, 12387844, April,4872, "N0"E, 80823134, December,5983.2,"YES"Figure 1: Sample input file “bills.txt". YES means industrial usage.run:Enter file name: data.txtSorry! data. txt not found. Try again.Enter file name: bills.inSorry! bills.in not found. Try again.Enter file name: bills.txtShow your name hereAhmed's OIFCBillsMay 2, 2021|ТуреAccount #MonthConsumptionAmountWaterElectricityWater4786.003872.005876.007342.0029.54355.50033.03337.92056.60040.88325.53524.2121238784412387844867876427786821389782421879812439879827312387844JanuaryJanuaryMarchAprilMarchAprilFebruaryWaterElectricityWaterWaterWater3982.008231.003283.002787.004872.005983.20MarchElectricityElectricity1238784480823134AprilDecember65.50076.612Total445.34 OMRBUILD SUCCESSFUL (total time: 11 seconds)Figure 2: Sample output for input file “bills.txt"run:Enter file name: bills.txtAhmed's OIFCBillsMay 2, 2021ТуреAccount #MonthConsumptionAmount123878442787.003283.00WaterMarch24.21225.535FebruaryAprilAprilMarchJanuaryJanuaryMarchAprilDecemberWater98798273879812438231.0040.883WaterWaterWater778682137342.0037.92033.033867876425876.004786.003872.003982.004872.005983.201238784429.543רםכ12387844ElectricityElectricityElectricityElectricity55.50056.60065.50089782421123878448082313476.612TotalBUILD SUCCESSFUL (total time: 4 seconds)445.34 OMRFigure 3: Sample output for input file “bills.txt" where water bills are printed before electricity bills.

Question

Problem:Assume that you have been hired at Oman Investment and Finance Co. SAOG (OIFC) to write a javaprogram that prints a summary of customers' bills for water and electricity. Each bill has type, accountnumber, consumption amount (kilowatt/gallon) and the month of the bill. Each bill charges an amountof 16.78 OMR as supply service charges. Electricity bill is either industrial or residential. The electricitytotal energy charge is computed based on the type of the usage. For industrial each kilowatt consumedcosts 12 Baisa while for residential it costs 10 Baisa per kilowatt consumed. The total amount is thesum of the energy charges plus the bill charges. Water bill applies different rates based on the waterconsumption where the first 5000 gallons cost 2 Baisa per gallon and any gallon more than 5000 costs2.5 Baisa. Water bill also includes sewage charges which is one third the water charges. The totalamount is the sum of the water charges, sewage charges and the bill charges.BillWaterElectricityAccording to the description above, you are asked to develop an OOP solution that includes thefollowing:[6.25 points] Class Bill which has:Variables to store bill information as described above.A constructor with parameters to initialize bill information.Accesor method for the consumption amount.getCharges() method that returns the supply service charges.Override toString( ) method to return a bill information line as shown in the sampleoutput. (Check Figure 2 below)[6.75 points] Class Water which has:A constructor with parameters to initialize a water bill information.Override the getCharges method to compute the total amount according to the descriptionabove.[5.75 points] Class Electricity which has:Variables to store whether the usage is industrial or residential.A constructor with parameters to initialize an electricity bill information.Override the getCharges method to compute the total amount according to the descriptionabove.Write the code for the tester class yourNameOIFC which has:[5.75 points] readBills method that accepts a scanner object and returns a list of bills. Itreads each line from the input file and construct the corresponding bill type.o [6 points] printBillsSummary method that accepts a list of bills and prints the summaryincluding the total charges as shown in the sample output (check Figure 2 below). Youshould replace the string &#34;Ahmed&#34; with your first name.[6.5 points] main method thatasks a user for input file namechecks whether the file existread from the input file objects of type Water or Electricity into an array list bycalling readBills. The line for water objects starts with &#34;W&#34; while for electricityobjects it starts with &#34;E&#34;. Check Figure 1 for a sample input file, “bills.txt&#34;, whichis also available on Moodle.calls printBillsSummary method to print the output shown in Figure 2 after readingthe whole input file.Bonus (Optional) [1 point]: Print all water bills before the electricity bills as shown in Figure 3.A elearn.squ.edu.om WaterA bills.txtW, 12387844,January,4786E, 12387844, January, 3872,&#34;YES&#34;w, 86787642, March, 5876W, 77868213,April, 7342E, 89782421, March, 3982, &#34;NO&#34;w, 87981243, April,8231w, 98798273, February, 3283W, 12387844, March, 2787E, 12387844, April,4872, &#34;N0&#34;E, 80823134, December,5983.2,&#34;YES&#34;Figure 1: Sample input file “bills.txt&#34;. YES means industrial usage.run:Enter file name:> data.txtSorry! data. txt not found. Try again.Enter file name:> bills.inSorry! bills.in not found. Try again.Enter file name:> bills.txtShow your name hereAhmed's OIFCBillsMay 2, 2021|ТуреAccount #MonthConsumptionAmountWaterElectricityWater4786.003872.005876.007342.0029.54355.50033.03337.92056.60040.88325.53524.2121238784412387844867876427786821389782421879812439879827312387844JanuaryJanuaryMarchAprilMarchAprilFebruaryWaterElectricityWaterWaterWater3982.008231.003283.002787.004872.005983.20MarchElectricityElectricity1238784480823134AprilDecember65.50076.612Total445.34 OMRBUILD SUCCESSFUL (total time: 11 seconds)Figure 2: Sample output for input file “bills.txt&#34;run:Enter file name:> bills.txtAhmed's OIFCBillsMay 2, 2021ТуреAccount #MonthConsumptionAmount123878442787.003283.00WaterMarch24.21225.535FebruaryAprilAprilMarchJanuaryJanuaryMarchAprilDecemberWater98798273879812438231.0040.883WaterWaterWater778682137342.0037.92033.033867876425876.004786.003872.003982.004872.005983.201238784429.543רםכ12387844ElectricityElectricityElectricityElectricity55.50056.60065.50089782421123878448082313476.612TotalBUILD SUCCESSFUL (total time: 4 seconds)445.34 OMRFigure 3: Sample output for input file “bills.txt&#34; where water bills are printed before electricity bills.

Accepted Answer

Your required code is given below:
Letting, 1 OMR = 1000 Baisa