import java.util.Scanner;
import java.io.File;

public class Parse {

	public static void parseString() {
		Scanner tokens =
			new Scanner("A squid eating dough is fast and bulbous");
		while(tokens.hasNext()) {
			String token = tokens.next();
			System.out.println("token = " + token);
		}
	}

	public static void parseFile() {
		try {
			Scanner tokens =
				new Scanner(new File("beefheart.txt"));
			while(tokens.hasNext()) {
				String token = tokens.next();
				System.out.println("token = " + token);
			}
		} catch(Exception e) {
			System.err.println(e);
		}
	}

	public static void addNumbers() {
		double total = 0;
		Scanner numbers = new Scanner("23 3.14 45 21 -19");
		while(numbers.hasNextDouble()) {
			double num = numbers.nextDouble();
			total = total + num;
		}
		System.out.println("total = " + total);
	}


	public static void main(String[] args) {
		//parseString();
		//parseFile();
		addNumbers();
	}


}