Create LoginActivity.java

Logging/LoginActivity.java

@@ -0,0 +1,40 @@
+import java.util.Scanner;
+
+public class LoginActivity {
+    public static void main(String[] args) {
+        Scanner scanner = new Scanner(System.in);
+
+        System.out.println("1. Register");
+        System.out.println("2. Login");
+        System.out.print("Select option: ");
+        int choice = scanner.nextInt();
+        scanner.nextLine(); // Consume newline
+
+        if (choice == 1) {
+            System.out.print("Enter username: ");
+            String username = scanner.nextLine();
+            System.out.print("Enter password: ");
+            String password = scanner.nextLine();
+
+            if (UserManager.registerUser(username, password)) {
+                System.out.println("Registration successful!");
+            } else {
+                System.out.println("Username already taken.");
+            }
+        } else if (choice == 2) {
+            System.out.print("Enter username: ");
+            String username = scanner.nextLine();
+            System.out.print("Enter password: ");
+            String password = scanner.nextLine();
+
+            if (UserManager.loginUser(username, password)) {
+                String uuid = UserManager.getUserUUID(username);
+                System.out.println("Login successful! Your UUID: " + uuid);
+            } else {
+                System.out.println("Invalid username or password.");
+            }
+        } else {
+            System.out.println("Invalid choice.");
+        }
+    }
+}