implements base task logic

src/main/java/core/basesyntax/PasswordValidationException.java

@@ -1,3 +1,9 @@
 package core.basesyntax;
 
-//write your code here
+import java.io.IOException;
+
+public class PasswordValidationException extends IOException {
+    public PasswordValidationException(String message) {
+        super(message);
+    }
+}

src/main/java/core/basesyntax/PasswordValidator.java

@@ -1,7 +1,13 @@
 package core.basesyntax;
 
+import java.util.Objects;
+
 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 && repeatPassword == null || !Objects.equals(password, repeatPassword)
+                || password.toCharArray().length < 10) {
+            throw new PasswordValidationException("Wrong passwords");
+        }
     }
 }

src/main/java/core/basesyntax/UserService.java

@@ -2,7 +2,12 @@
 
 public class UserService {
     public void registerUser(User user) {
-        //write your code here
+        try {
+            new PasswordValidator().validate(user.getPassword(), user.getRepeatPassword());
+            saveUser(user);
+        } catch (PasswordValidationException e) {
+            System.out.println("Your passwords are incorrect. Try again.");
+        }
     }
 
     public void saveUser(User user) {