Java Program / methods

Question

One sales shop offer following discount rates to customers based on their bill value.

Bill value Range Discount rate

bill value >= 10000 discount 20%

bill value >= 5000 disocunt 10%

bill value >= 2000, discount 5%

2000 > bill value - discount 0%

Write Java program perform following actions

 Write a method to input the bill value from the keyborad. (readValue())

 Write a method to find the payable amount after calculation the discount. (calDiscount())

 Write a main method to call readValue() and calDiscount() methods.

Answer 1

import java.io.*;

class Discounts

{

private double amount;

private Console console;

Discounts()

{

amount = 0;

console = System.console();

}

public double GetAmount() { return(amount); }

public int readValue()

{

int iReturn = 0;

try

{

System.out.print(" Please input the bill value :>");

String inbuff = console.readLine();

amount = Double.parseDouble(inbuff);

}

catch (Exception ex)

{

iReturn = -1;

System.out.println(" Input exception has occured ");

}

return(iReturn);

}

public double calDiscount()

{

double dblReturn = amount;

if (amount>=10000)

{

dblReturn = amount * 0.80;

}

else if (amount>=5000)

{

dblReturn = amount * 0.90;

}

else if (amount >=2000)

{

dblReturn = amount * 0.95;

}

return(dblReturn);

}

public static void main(String args[])

{

Discounts myDiscount = new Discounts();

if (myDiscount.readValue()>=0)

{

System.out.println(" The original amount of the bill is " + myDiscount.GetAmount());

System.out.println(" The discounted amount of the bill is " + myDiscount.calDiscount());

}

}