### How to Check Perfect Number in Java

A perfect number is a positive integer where the sum of all its positive divisors, except itself, is equal to the number itself.

For example 6 is a perfect number as 1,2 and 3 are its divisors and the sum of divisors=1+2+3=6. Here we have created a program that will take the number from the user and reports whether it is perfect or not.

**Java version of perfect is given bellow :**

package number; import java.util.Scanner; /** * * @author ACHCHUTHAN */ public class perfect { private int number; public perfect() { Scanner input = new Scanner(System.in); System.out.println("Enter positive integer"); number = input.nextInt(); } public perfect(int number) { this.number = number; } public boolean isPerfect() { int pefect = 0; for (int i = 1; i < number; i++) { if (number % i == 0) { pefect += i; } } if (number == pefect) { return true; } else { return false; } } public void print() { if (isPerfect()) { System.out.println("Number is Perfect"); } else { System.out.println("Number is not Perfect"); } } public static void main(String args[]) { perfect pn = new perfect(); pn.print(); perfect pn1 = new perfect(6); pn1.print(); } }Download

**Download of this program :**

run:

Enter positive integer

8

Number is not Perfect

Number is Perfect

BUILD SUCCESSFUL (total time: 6 seconds)