Perfect square

 If square root multiplied by itself equals number, then it is a perfect square.

package functional.tests.aaas;

import java.util.Arrays;
//perfect square
public class progprac {
    public static void main(String[] args) {
        int num = 25;

        int root = (int)Math.sqrt(num);

        if(root * root == num) {
            System.out.println(num + " is Perfect Square");
        } else {
            System.out.println(num + " is Not Perfect Square");
        }
    }
}