The code in the following Java program is redundant, basically doing the same th

Question

The code in the following Java program is redundant, basically doing the same thing twice. Write a static method named getBills that eliminates this redundancy. Rewrite method main to use your new method.

import java.util.*;

public class Bills {

    public static void main(String[] args) {

        Scanner console = new Scanner(System.in);       

        System.out.print("How much will John be spending? ");

        double amount = console.nextDouble();

       System.out.println();

        int numBills1 = (int) (amount / 20.0);

        if (numBills1 * 20.0 < amount) {

            numBills1++;

        }

        System.out.print("How much will Jane be spending? ");

        amount = console.nextDouble();

        System.out.println();

        int numBills2 = (int) (amount / 20.0);

        if (numBills2 * 20.0 < amount) {

            numBills2++;

        }

        System.out.println("John needs " + numBills1 + " bills");

        System.out.println("Jane needs " + numBills2 + " bills");

    }

}

Explanation / Answer

import java.util.*;

public class Bills

{

public static int getBills(double amount)

{

int numBills = (int) (amount / 20.0);

if (numBills * 20.0 < amount) {

numBills++;

}

return numBills;

}

public static void main(String[] args)

{

Scanner console = new Scanner(System.in);   

System.out.print("How much will John be spending? ");

double amount = console.nextDouble();

int numBills1 = getBills(amount);

System.out.print("How much will Jane be spending? ");

amount = console.nextDouble();

int numBills2 = getBills(amount);

System.out.println("John needs " + numBills1 + " bills");

System.out.println("Jane needs " + numBills2 + " bills");

}

}

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