Add Perfect Number Detector

PerfectNumber.java

@@ -0,0 +1,45 @@
+import java.util.Scanner;
+
+/*
+ * A perfect number is a positive integer that is equal to the sum of its proper divisors.
+ * A proper divisor is a positive integer other than the number itself that divides the number evenly.
+ * For example, 6 is a perfect number because the sum of its proper divisors, 1, 2, and 3, is equal to 6.
+ */
+public class PerfectNumber {
+    public static void main(String[] args) {
+        // Create a Scanner object
+        Scanner sc = new Scanner(System.in);
+
+        // Prompt the user to enter an integer
+        System.out.print("Enter an integer: ");
+
+        // Read the integer
+        int number = sc.nextInt();
+
+        // Check if number is perfect number and print the desired message
+        if (isPerfect(number))
+            System.out.println(number + " is a perfect number");
+        else
+            System.out.println(number + " is not a perfect number");
+    }
+
+    /**
+     * Check if a number is perfect number
+     * @param number the number to check
+     * @return true if number is perfect number, false otherwise
+     */
+    public static boolean isPerfect(int number) {
+        // Store the sum of proper divisors
+        int sum = 0;
+
+        // Find all divisors and add them
+        for (int i = 1; i < number; i++) {
+            if (number % i == 0) {
+                sum += i;
+            }
+        }
+
+        // Return true if sum is equal to number
+        return sum == number;
+    }
+}