evil_number.java

  
import Java.util.*;   
import java.io.*;   
import java.util.Scanner;  
  
public class EvilNumberExample {  
  
    
    public static boolean checkNumber(int n) {  
  
     
  
        
        int count = 0;  
  
       
        while(binaryNumber != 0) {  
  
           
            if(binaryNumber % 10 == 1)   
                count++;  
  
           
            binaryNumber = binaryNumber / 10;  
        }  
  
        if(count % 2 == 0)  
            return true;   
  
        
        return false;  
    }  
  
     
    private static long convertToBinary(int number) {  
        long binaryNumber = 0;  
        int rem = 0;  
        int j = 1;  
        while(number != 0) {  
            rem = number % 2;  
            binaryNumber += rem * j;  
            number = number / 2;  
            j = j * 10;  
        }  
          
        return binaryNumber;   
    }  
      
    //main() method start  
    public static void main(String[] args) {  
      
        int num = 0;  
  
        Scanner sc =  new Scanner(System.in);  
          
        System.out.print("Enter a number : ");  
          
        num = sc.nextInt();  
  
        if(checkNumber(num))  
            System.out.println(num + " is an evil number");  
        else  
            System.out.println(num + " is not an evil number");  
  
    }  
}