Java.lang.NumberFormatException When I type "Exit"

Question

import java.util.Scanner;
public class ItemsQ2 {
public static void main(String[] args) {
String item = null;
int Iprice = 0;
int total_bill = 0;
do {
System.out.print("Enter Item: ");
Scanner Sitem = new Scanner(System.in);
item = Sitem.nextLine();
String test= item.replaceAll("\\D","");
Iprice = Integer.parseInt(test);
total_bill = Iprice + total_bill;
// System.out.print(test);
System.out.print("Your total bill is: " +total_bill);
} while (!item.equalsIgnoreCase("Exit"));
System.out.print("Your total bill is: " +total_bill);
}

Answer 1

To fix this problem, you can check if the input string is "Exit" before you try to convert it to an integer. If so, exit gracefully at that point(echo to the user something like 'program finished successfully' first). You may also want to wrap the line that converts the input to an integer in a try/catch block. In the catch block, exit gracefully (echo to the user 'illegal character entered').