diff --git a/src/main/java/core/basesyntax/Main.java b/src/main/java/core/basesyntax/Main.java
new file mode 100644
index 000000000..d95a907e3
--- /dev/null
+++ b/src/main/java/core/basesyntax/Main.java
@@ -0,0 +1,16 @@
+package core.basesyntax;
+
+public class Main {
+    public static void main(String[] agr) {
+        UserService userService = new UserService();
+        User bob = new User("bob@email.com", "1234567890", "1234567890");
+        User alice = new User("alice@gmail.com", "1234567890", "0987654321");
+        User mark = new User("mark@gmail.com", "1234", "1234");
+        User marie = new User("marie@gmail.com", "1234567890", null);
+        User[] users = new User[]{bob, alice, mark, marie};
+
+        for (User user : users) {
+            userService.registerUser(user);
+        }
+    }
+}
diff --git a/src/main/java/core/basesyntax/PasswordValidationException.java b/src/main/java/core/basesyntax/PasswordValidationException.java
index c9e7ed3e7..70c1d49fd 100644
--- a/src/main/java/core/basesyntax/PasswordValidationException.java
+++ b/src/main/java/core/basesyntax/PasswordValidationException.java
@@ -1,3 +1,7 @@
 package core.basesyntax;
 
-//write your code here
+public class PasswordValidationException extends Exception {
+    public PasswordValidationException(String message) {
+        super(message);
+    }
+}
diff --git a/src/main/java/core/basesyntax/PasswordValidator.java b/src/main/java/core/basesyntax/PasswordValidator.java
index d4655c9f5..a97f1b7e3 100644
--- a/src/main/java/core/basesyntax/PasswordValidator.java
+++ b/src/main/java/core/basesyntax/PasswordValidator.java
@@ -1,7 +1,11 @@
 package core.basesyntax;
 
 public class PasswordValidator {
-    public void validate(String password, String repeatPassword) {
-        //write your code here
+    public void validate(String password, String repeatPassword)
+            throws PasswordValidationException {
+
+        if (password == null || password.length() < 10 || !password.equals(repeatPassword)) {
+            throw new PasswordValidationException("Wrong passwords");
+        }
     }
 }
diff --git a/src/main/java/core/basesyntax/UserService.java b/src/main/java/core/basesyntax/UserService.java
index 52f08d130..fdf395c6d 100644
--- a/src/main/java/core/basesyntax/UserService.java
+++ b/src/main/java/core/basesyntax/UserService.java
@@ -1,8 +1,16 @@
 package core.basesyntax;
 
 public class UserService {
+    private final PasswordValidator passwordValidator = new PasswordValidator();
+
     public void registerUser(User user) {
-        //write your code here
+        try {
+            passwordValidator.validate(user.getPassword(), user.getRepeatPassword());
+        } catch (PasswordValidationException e) {
+            System.out.println("Your passwords are incorrect. Try again.");
+            return;
+        }
+        saveUser(user);
     }
 
     public void saveUser(User user) {