diff --git a/src/pkg2/Calculator.java b/src/pkg2/Calculator.java
new file mode 100644
index 0000000..fbae497
--- /dev/null
+++ b/src/pkg2/Calculator.java
@@ -0,0 +1,80 @@
+package pkg2;
+
+import java.util.Scanner;
+
+public class Calculator {
+    int add(int a, int b) {
+        return a + b;
+    }
+
+    int sub(int a, int b) {
+        return a - b;
+    }
+
+    int mul(int a, int b) {
+        return a * b;
+    }
+
+    int div(int a, int b) {
+        return a / b;
+    }
+
+    int mod(int a, int b) {
+        return a % b;
+    }
+
+    public void calculator() {
+        Scanner sc = new Scanner(System.in);
+        Calculator calc = new Calculator();
+        int a, b;
+        int choice = 0;
+        while (choice >= 0) {
+            System.out.println("Enter your choice: ");
+            System.out.println("1. Addition");
+            System.out.println("2. Subtraction");
+            System.out.println("3. Multiplication");
+            System.out.println("4. Division");
+            System.out.println("5. Modulus");
+            System.out.println("0. Exit");
+            choice = sc.nextInt();
+            switch (choice) {
+                case 1:
+                    System.out.println("Enter two numbers: ");
+                    a = sc.nextInt();
+                    b = sc.nextInt();
+                    System.out.println("Addition: " + calc.add(a, b));
+                    break;
+                case 2:
+                    System.out.println("Enter two numbers: ");
+                    a = sc.nextInt();
+                    b = sc.nextInt();
+                    System.out.println("Subtraction: " + calc.sub(a, b));
+                    break;
+                case 3:
+                    System.out.println("Enter two numbers: ");
+                    a = sc.nextInt();
+                    b = sc.nextInt();
+                    System.out.println("Multiplication: " + calc.mul(a, b));
+                    break;
+                case 4:
+                    System.out.println("Enter two numbers: ");
+                    a = sc.nextInt();
+                    b = sc.nextInt();
+                    System.out.println("Division: " + calc.div(a, b));
+                    break;
+                case 5:
+                    System.out.println("Enter two numbers: ");
+                    a = sc.nextInt();
+                    b = sc.nextInt();
+                    System.out.println("Modulus: " + calc.mod(a, b));
+                    break;
+                case 0:
+                    System.out.println("Exiting...");
+                    choice = -1;
+                default:
+                    System.out.println("Invalid choice!");
+            }
+        }
+        sc.close();
+    }
+}
diff --git a/src/pkg2/Main.java b/src/pkg2/Main.java
new file mode 100644
index 0000000..50f4256
--- /dev/null
+++ b/src/pkg2/Main.java
@@ -0,0 +1,10 @@
+package pkg2;
+
+import pkg2.Calculator;
+
+public class Main{
+    public static void main(String args[]){
+        Calculator c = new Calculator();
+        c.calculator();
+    }
+}
\ No newline at end of file