perfect.java

import java.util.Scanner;
class Perfect
{
        static boolean perfect(int num)
        {
            int sum = 0;
            for(int i=1; i<num; i++)
            {
                if(num%i==0)
                {
                    sum = sum+i;
                }
            }
            if(sum==num)
                return true;
            else
                return false;
        }
        public static void main(String[] args)
        {
           try
           {
            Scanner obj = new Scanner (System.in);
            int n=0;
            System.out.println("enter the value for N");
            int N = obj.nextInt();
            if(N<=0)
            System.out.println("enter the N value correctly");
            if(N==3)
            n=1000;
            if(N==5)
            n=100000000;
            for(int i=1; i<=n; i++)
            {
                if(perfect(i))
                    System.out.println(i);
            }
           }
           catch(Exception e)
           {
                  System.out.println("enter the N value correctly");
            }
 
 
       }
}