/*
    TestTokenizer1.java
    CIS 160
    David Klick
    2005-09-09

    Demonstration of StringTokenizer to evaluate a
    series of numbers typed in. This program also
    demonstrates a priming read, repetition, a sentinel
    value, parsing strings into numbers, the use of an
    accumulator and exception handling.
*/

import java.util.Scanner;
import java.util.StringTokenizer;

public class TestTokenizer1 {
    public static void main(String[] args) {
        double number;
        double total = 0.0;
        String delims = " ";

        Scanner kbd = new Scanner(System.in);
        System.out.print("Enter a series of numbers (\"QUIT\" to exit): ");
        String s = kbd.nextLine();
        while (!s.equalsIgnoreCase("QUIT")) {
            StringTokenizer tok = new StringTokenizer(s, delims);
            while (tok.hasMoreTokens()) {
                try {
                    number = Double.parseDouble(tok.nextToken());
                } catch (NumberFormatException e) {
                    number = 0.0;
                }
                total += number;
            }
            System.out.print("Enter more numbers (\"QUIT\" to exit): ");
            s = kbd.nextLine();
        }
        System.out.println("The total is: " + total);
    }
}