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Question

hello i am new to java and i am trying to do the program will only calculate the costs of either a call to Germany or a call to India. The cost of a call to Germany is a $0.99 connection fee for any call, $1.00 for the first three minutes, and $0.25 for each additional minute over 3. The cost of a call to India is a $1.99 connection fee, $2.00 for the first three minutes, and $0.45 for each additional minute over 3. The program will ask the user to enter a character representing the country called and determine if the country entered is valid. If an invalid country is entered, the program will print a message to that effect but will not calculate the cost of the call. If the country entered by the user is valid, the program will prompt the user for the number of minutes the call lasted, calculate the cost of the call to that country, and display the cost.

Answer 1

import java.io.*;
import java.text.DecimalFormat;
public class PhoneCallBilling_Lab4
static BufferedReader keyboard = new
BufferedReader(new InputStreamReader(System.in));
//Named constants
static final double CONNECTION_FEE = 1.99;
static final double FIRST_THREE_MIN_FEE = 2.00;
static final double COST_OF_EACH_ADDITIONAL_MIN = 0.45;
public static void main(String[] args) throws IOException
//Variable declaration
int noOfMinCallLasted;
double amountDue;
DecimalFormat twoDigits =
new DecimalFormat("0.00");
System.out.println("This program computes an international phone call.");
System.out.print("Enter the number of minutes the call lasted: ");
noOfMinCallLasted =
Integer.parseInt(keyboard.readLine());
System.out.println();
if (noOfMinCallLasted<= 3)
amountDue = CONNECTION_FEE +
FIRST_THREE_MIN_FEE;
else
amountDue = CONNECTION_FEE +
FIRST_THREE_MIN_FEE +
(noOfMinCallLasted - 3) * COST_OF_EACH_ADDITIONAL_MIN;
System.out.println("The number of minutes the call lasted was "
+ noOfMinCallLasted);
System.out.println("Amount due = $"
+ twoDigits.format(amountDue));
}