import java.util.Scanner;
import java.util.InputMismatchException;
import java.util.NoSuchElementException;

public class ScannerDemo1 {
	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.");

		/*
		The Scanner object holds a referecne to System.in.
		The nextInt method of this scanner object will call the
		read method of System.in to get the digits of the number.
		*/
		Scanner scanner = new Scanner(System.in);

		try {
			final int age = scanner.nextInt();
			final double temperature = scanner.nextDouble();
			final String name = scanner.next();	//any string

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

			scanner.close();
		}

		catch (InputMismatchException e) {
			System.err.println("wrong data type, "
				+ "or value out of range");
			System.err.println(e.getMessage());
			System.exit(1);
		}

		catch (NoSuchElementException e) {
			System.err.println("input is exhausted");
			System.err.println(e.getMessage());
			System.exit(1);
		}

		catch (IllegalStateException e) {
			System.err.println("scanner already closed");
			System.err.println(e.getMessage());
			System.exit(1);
		}
	}
}