I am trying to only display at most two decimal digits.(rounding)

[aleandro santos]

I am writtng a java app that computes an energy bill, but the computations are only supposed to display two decimals digits at the most.
here is my code, I am trying to find a way to only display the two digits after the decimal in the answer (print statement). I was thinking that I could use a string method or something.

  
import java.util.Scanner;
 
public class EnergyCost
{
public static void main(String[] args)
{
final double UsageRate = 0.0942;
final double PowerRate = 0.0075;
final double FuelFactor = 0.0001403;
final double TaxRate = 0.082;
int KiloHour;
double EnergyCharge, PowerCost, FuelAdjust, TaxCharge, Total;
Scanner scan = new Scanner(System.in);
 
System.out.println("Hello! My name is David and I will be helping you today!"); /*Done for aesthetics*/
System.out.println("Please enter the umber of kilowatt-hours used last month: ");
KiloHour = scan.nextInt();
 
EnergyCharge = KiloHour * UsageRate; /*Calculates the energy charge*/
PowerCost = KiloHour * PowerRate; /*Calculates the power supply cost*/
FuelAdjust = KiloHour * FuelFactor; /*Calcuates the fuel factor adjustement*/
TaxCharge = ((EnergyCharge + PowerCost) -(FuelAdjust)) * ( TaxRate); /*Calculates the Dollar amount of tax*/
Total= ((EnergyCharge + PowerCost) -(FuelAdjust)) + (TaxCharge); /*Calculates the total eneergy cost*/
 
System.out.println("The Energy Charge is " + EnergyCharge);
System.out.println("The Total Energy Charges is " + Total);
}
}
  

[Ernest Friedman-Hill]

Hi,

Welcome to JavaRanch!

Have a look at the PrintStream.printf() method (i.e., System.out.printf() ). See the documentation here.

[John Bartlett]

Hi,

You could also take a look at the
BigDecimal class.

Or take a look at the DecimalFormat class.

John