/** 
 * CS1101 (AY2007/8 Semester 1)
 * Lab #2 Exercise 1
 * Lab2Ex1.java 
 * This program uses the Circle class to create a
 * circle object, and compute its area.
 * Written by: Aaron Tan
 */

import javax.swing.*;

public class Lab2Ex1 {
    
    public static void main (String[] args) {
        
        String inputStr;
        double radius, area;

        // Get radius from user
        inputStr = JOptionPane.showInputDialog(null,
                     "Enter radius: "); 
        radius = Double.parseDouble(inputStr);
        
        // Create circle object and changes its radius 
        Circle circle = new Circle();
        circle.setRadius(radius);

        // Compute area of the circle object
        area = circle.computeArea();

        // Display the result
        JOptionPane.showMessageDialog(null, "Area = " + area);
    }
}