// JOptionPane for inputing data example
// Compute the area and the circumference of a circle

import java.awt.*;
import javax.swing.*;

class MyGUI4 {

    public static void main (String[] args) {

	final double PI = 3.14159;

	String radius_input;
	radius_input = JOptionPane.showInputDialog (null, "Enter the radius of a circle:");

	double radius, area, circumference;

        radius = Double.parseDouble(radius_input);

	area = PI * radius * radius;

	circumference = 2 * PI * radius;

	JOptionPane.showMessageDialog (null, "Radius:        " + radius + "\n" +
                                             "Area:          " + area + "\n" +
                                             "Circumference: " + circumference);

    }
}