How to find a number is Perfect Number or Not

How to find a number is Perfect Number or Not

SOURCE : PerfectNo.java

public class PerfectNo {
	public static void main(String[] args) {
		PerfectNo pf = new PerfectNo();
		pf.pfnum(6);

	}

	int temp = 0;

	private void pfnum(int num) {
		for (int i = 1; i <= num / 2; i++) {
			if (num % i == 0) {
				temp += i;
			}
		}
		if (temp == num) {

			System.out.println("number is perfect");
		} else {
			System.out.println("number is not perfect");
		}

	}

}

INPUT

6

OUTPUT

number is perfect

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