Question

Please tell me why I get a "moreCalls cannot be resolved to a variable" error at the while statement.

Answer 1

import javax.swing.JOptionPane;
public class TelephoneBill {
public static void main(String[] args) {

do {
String cpm = JOptionPane.showInputDialog("What is the cost per minute of your telephone call? ");
double costPerMinute = Double.parseDouble(cpm);
String callType = JOptionPane.showInputDialog("What type of call? (local or long distance?") ;
String callTime = JOptionPane.showInputDialog("How many minutes was your call?");
double callLength = Double.parseDouble(callTime);
double priceOfCall;
if (callType == "local"){
priceOfCall = processLocal(callLength, costPerMinute);}
else if (callType == "long distance"){
priceOfCall = processLongDistance(costPerMinute);}
double totalCost = priceOfCall;
String moreCalls = JOptionPane.showInputDialog("Do you want to continue? ( enter: yes or no)");}
while (moreCalls == "yes") ;

}
public static double processLocal(double length, double price) {
double cost = ( length * price);
if (cost>2) {
cost = 2;}
System.out.println("The cost of this local call is: $" + cost);
return cost;
}
public static double processLongDistance (double length){
double cost;
if (length > 20 ){
cost = (length-20) * .05 + 1;}
else
cost = 5;
System.out.println("The cost of this longdistance call is: $" + cost);
return cost;}
}