vavr refactor (#1871)

* vavr refactor

* small fix

vavr/src/main/java/com/baeldung/vavr/Person.java

@@ -0,0 +1,38 @@
+package com.baeldung.vavr;
+
+public class Person {
+    private String name;
+    private int age;
+
+    public Person(String name, int age) {
+        super();
+        this.name = name;
+        this.age = age;
+    }
+
+    public Person() {
+        super();
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public int getAge() {
+        return age;
+    }
+
+    public void setAge(int age) {
+        this.age = age;
+    }
+
+    @Override
+    public String toString() {
+        return "Person [name=" + name + ", age=" + age + "]";
+    }
+
+}

vavr/src/main/java/com/baeldung/vavr/PersonValidator.java

@@ -0,0 +1,22 @@
+package com.baeldung.vavr;
+
+import io.vavr.collection.Seq;
+import io.vavr.control.Validation;
+
+class PersonValidator {
+    String NAME_ERR = "Invalid characters in name: ";
+    String AGE_ERR = "Age must be at least 0";
+
+    public Validation<Seq<String>, Person> validatePerson(String name, int age) {
+        return Validation.combine(validateName(name), validateAge(age)).ap(Person::new);
+    }
+
+    private Validation<String, String> validateName(String name) {
+        String invalidChars = name.replaceAll("[a-zA-Z ]", "");
+        return invalidChars.isEmpty() ? Validation.valid(name) : Validation.invalid(NAME_ERR + invalidChars);
+    }
+
+    private Validation<String, Integer> validateAge(int age) {
+        return age < 0 ? Validation.invalid(AGE_ERR) : Validation.valid(age);
+    }
+}

vavr/src/main/java/com/baeldung/vavr/exception/handling/JavaTryCatch.java

@@ -0,0 +1,21 @@
+package com.baeldung.vavr.exception.handling;
+
+import com.baeldung.vavr.exception.handling.client.ClientException;
+import com.baeldung.vavr.exception.handling.client.HttpClient;
+import com.baeldung.vavr.exception.handling.client.Response;
+
+public class JavaTryCatch {
+    private HttpClient httpClient;
+
+    public JavaTryCatch(HttpClient httpClient) {
+        this.httpClient = httpClient;
+    }
+
+    public Response getResponse() {
+        try {
+            return httpClient.call();
+        } catch (ClientException e) {
+            return null;
+        }
+    }
+}

vavr/src/main/java/com/baeldung/vavr/exception/handling/VavrTry.java

@@ -0,0 +1,18 @@
+package com.baeldung.vavr.exception.handling;
+
+
+import com.baeldung.vavr.exception.handling.client.HttpClient;
+import com.baeldung.vavr.exception.handling.client.Response;
+import io.vavr.control.Try;
+
+public class VavrTry {
+    private final HttpClient httpClient;
+
+    public VavrTry(HttpClient httpClient) {
+        this.httpClient = httpClient;
+    }
+
+    public Try<Response> getResponse() {
+        return Try.of(httpClient::call);
+    }
+}

vavr/src/main/java/com/baeldung/vavr/exception/handling/client/ClientException.java

@@ -0,0 +1,8 @@
+package com.baeldung.vavr.exception.handling.client;
+
+
+public class ClientException extends Exception {
+    public ClientException(String message) {
+        super(message);
+    }
+}

vavr/src/main/java/com/baeldung/vavr/exception/handling/client/HttpClient.java

@@ -0,0 +1,6 @@
+package com.baeldung.vavr.exception.handling.client;
+
+
+public interface HttpClient {
+    Response call() throws ClientException;
+}

vavr/src/main/java/com/baeldung/vavr/exception/handling/client/Response.java

@@ -0,0 +1,9 @@
+package com.baeldung.vavr.exception.handling.client;
+
+public class Response {
+    public final String id;
+
+    public Response(String id) {
+        this.id = id;
+    }
+}