Perfect Square

package perfect.square;

import javax.swing.JOptionPane;
import java.lang.Math;

/**
 *
 * @author Monty
 */
public class PerfectSquare {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        double innum, root, square;
        int inum, num2;
        String num = JOptionPane.showInputDialog("Input a number");
        inum = Integer.parseInt(num);
        innum = (double)inum;
        root = Math.sqrt(innum);
        num2 = (int)root;
        square = Math.pow(num2, 2);

        if (innum == square) {
            System.out.println("Number is a perfect square.");
        } else{
            System.out.print("Number is not a perfect square");
        }








    }

}