import java.util.Scanner;

public class ScannerDemo2 {
	public static void main(String[] args) {

		System.out.println("Type your age, temperature, first name.");
		System.out.println("Separate them with white space "+
			"and follow the last one with Enter.");

		Scanner scanner = new Scanner(System.in);
		int age = 0;	//make sure initialized
		double temperature = 0.0;
		String name = "";

		if (scanner.hasNextInt()) {
			age = scanner.nextInt();
		} else {
			System.err.print("Expected age, not ");
			if (scanner.hasNext()) {
				System.err.println(scanner.next() + ".");
			} else {
				System.err.println("end of input.");
			}
			System.exit(1);
		}

		if (scanner.hasNextDouble()) {
			temperature = scanner.nextDouble();
		} else {
			System.err.print("Expected temperature, not ");
			if (scanner.hasNext()) {
				System.err.println(scanner.next() + ".");
			} else {
				System.err.println("end of input.");
			}
			System.exit(1);
		}

		if (scanner.hasNext()) {	//any value at all
			name = scanner.next();
		} else {
			System.err.println("Expected name, not end of input.");
			System.exit(1);
		}

		System.out.println("age == " + age
			+ ", temperature == " + temperature
			+ ", name == " + name);
	}
}