package lectureDemo;
import javax.swing.JOptionPane;

/*
 * Created on Dec 11, 2007
 *
 */

/**
 * @author hornick
 *
 */
public class ExceptionsDemoApp {

	/**
	 * standard main() method
	 */
	public static void main(String[] args) {
		double value = getValueFromUser();
		double root = computeSquareRoot(value);
		String output = String.format("Square root of %f is %f", value, root);
		JOptionPane.showMessageDialog(null, output);
	}

	/**
	 * This method asks the user for input
	 */
	public static double getValueFromUser() {
		String strInput = JOptionPane.showInputDialog(null,
		"Enter a positive number less that 1000:");

		// just try to parse whatever was entered
		double num = Double.parseDouble(strInput);

		return num;
	}
	/**
	 * This method computes the square root of a value
	 */
	public static double computeSquareRoot(double value) {
		double root = Math.sqrt(value);
		return root;
	}
}