Sunny Number.java

import java.util.*;   
public class SunnyNumberExample1  
{   
//driver code   
public static void main(String args[])   
{   
Scanner sc = new Scanner(System.in);  
System.out.print("Enter a number to check: ");  
//reading a number from the user  
int N=sc.nextInt();  
//calling user-defined function   
isSunnyNumber(N);   
}       
//function checks whether the given is a perfect square or not   
static boolean findPerfectSquare(double num)   
{   
//finds the square root of the ggiven number  
double square_root = Math.sqrt(num);   
//if square root is an integer   
return((square_root - Math.floor(square_root)) == 0);   
}   
//function that checks whether the given number is Sunny or not  
static void isSunnyNumber(int N)   
{   
//checks N+1 is perfect square or not  
if (findPerfectSquare(N + 1))   
{   
System.out.println("The given number is a sunny number.");   
}   
//executes if N+1 is not a perfect square  
else  
{   
System.out.println("The given number is not a sunny number.");   
}   
}   
}