import java.unit.Scanner; import java.io.File; public class VRUnit3 { public static void main(String[] args) throws Exception { System.out.print ("Please enter total system cost"); double Totalsystemcost; double TotalEnergyProducedinoneweek = 0; double TotalSavingsforoneweek = 498.4; double TotalSavingsperday = 71.2; double TotalSystemcost = 42.4; double Daystorecoupsystem = 0.6; double Yearstorecoupsystem = 0.0016438356; double COSTOFELECTRICITY = .085; Totalsystemcost = stdIn.next(); String filename = "energyProduced.txt"; String line; Scanner fileIn;fileIn = new Scanner(Paths.get(filename)); while (fileIn.hasnext()) { TotalEnergyProducedinoneweek = TotalEnergyProducedinoneweek + fileIn.readObject(); } //TotalEnergyProducedinoneweek = TOTAL OF ALL 7; //TotalSavingsforoneweek = energy produced x COSTOFELECTRICITY; //Total Savings per day = Total Savings one week / 7; //Total system cost = READ IN FROM KEYBOARD; //Days to recoup = Total system cost / Total Savings per day; int; //Years to recoup system = Days to recoup / 365; final double COSTOFELECTRICITY = .085; // in kWh; propogationDelay = amount / COSTOFELECTRICITY; } system.out (stdIn.next();