Calculate square of odd, cube of even , quotient for multiple of 7 with java code.

import javax.swing.*;

class Cal

{

                public static void main(String args[])

                {

                                int n;

                                n = Integer.parseInt(JOptionPane.showInputDialog("enter a value: "));

                                if (n%2==0)

                                {

                                System.out.println("cube of even value = " + n*n*n);

                                JOptionPane.showMessageDialog(null, "cube of even value = " + (n*n*n));

                                }

                                else if (n%2!=0)

                                {

                                System.out.println("square of odd value = " + n*n);

                                JOptionPane.showMessageDialog(null, "square of odd value = " + (n*n));

                                }

                                if (n%7 == 0)

                                {

                                System.out.println("quotient for 7 is " + n/7);

                                JOptionPane.showMessageDialog(null,"quotient for 7 is " + (n/7));

                                }

                                System.exit(0);

                }

}