Question

Write a Java program to accept a number and display it's square, if it is even?​

Answer 1

Answer:

import java.util.Scanner;  

public class CheckPerfectSquareExample1  

{    

//user-defined method that checks the number is perfect square or not  

static boolean checkPerfectSquare(double number)    

{    

//calculating the square root of the given number  

double sqrt=Math.sqrt(number);    

//finds the floor value of the square root and comparing it with zero  

return ((sqrt - Math.floor(sqrt)) == 0);    

}    

//main method  

public static void main(String[] args)    

{    

System.out.print("Enter any number: ");  

//object of the Scanner class  

Scanner sc=new Scanner(System.in);  

//reading a number of type double from the user  

double number=sc.nextDouble();    

//calling the user defined method  

if (checkPerfectSquare(number))    

System.out.print("Yes, the given number is perfect square.");    

else  

System.out.print("No, the given number is not perfect square.");    

}    

}  

Explanation: