refactoring: Issue #2377: The repository code has been refactored to use the recor… (#2505)

* Issue #2377: The repository code has been refactored to use the record class

* Issue #2377: Refactored according to the rules defined for the repo code

* Issue #2377: Refactored according to the rules defined for the repo code

* Issue #2377: Refactored according to the rules defined for the repo code

monad/src/main/java/com/iluwatar/monad/App.java

@@ -54,10 +54,10 @@ public class App {
    */
   public static void main(String[] args) {
     var user = new User("user", 24, Sex.FEMALE, "foobar.com");
-    LOGGER.info(Validator.of(user).validate(User::getName, Objects::nonNull, "name is null")
-        .validate(User::getName, name -> !name.isEmpty(), "name is empty")
-        .validate(User::getEmail, email -> !email.contains("@"), "email doesn't contains '@'")
-        .validate(User::getAge, age -> age > 20 && age < 30, "age isn't between...").get()
+    LOGGER.info(Validator.of(user).validate(User::name, Objects::nonNull, "name is null")
+        .validate(User::name, name -> !name.isEmpty(), "name is empty")
+        .validate(User::email, email -> !email.contains("@"), "email doesn't contains '@'")
+        .validate(User::age, age -> age > 20 && age < 30, "age isn't between...").get()
         .toString());
   }
 }

monad/src/main/java/com/iluwatar/monad/User.java

@@ -25,43 +25,13 @@
 package com.iluwatar.monad;
 
 /**
- * User Definition.
+ * Record class.
+ *
+ * @param name  - name
+ * @param age   - age
+ * @param sex   - sex
+ * @param email - email address
  */
-public class User {
-
-  private final String name;
-  private final int age;
-  private final Sex sex;
-  private final String email;
-
-  /**
-   * Constructor.
-   *
-   * @param name  - name
-   * @param age   - age
-   * @param sex   - sex
-   * @param email - email address
-   */
-  public User(String name, int age, Sex sex, String email) {
-    this.name = name;
-    this.age = age;
-    this.sex = sex;
-    this.email = email;
-  }
-
-  public String getName() {
-    return name;
-  }
-
-  public int getAge() {
-    return age;
-  }
-
-  public Sex getSex() {
-    return sex;
-  }
-
-  public String getEmail() {
-    return email;
-  }
+public record User(String name, int age, Sex sex, String email) {
 }
+

monad/src/test/java/com/iluwatar/monad/MonadTest.java

@@ -41,7 +41,7 @@ class MonadTest {
     assertThrows(
         IllegalStateException.class,
         () -> Validator.of(tom)
-            .validate(User::getName, Objects::nonNull, "name cannot be null")
+            .validate(User::name, Objects::nonNull, "name cannot be null")
             .get()
     );
   }
@@ -52,8 +52,8 @@ class MonadTest {
     assertThrows(
         IllegalStateException.class,
         () -> Validator.of(john)
-            .validate(User::getName, Objects::nonNull, "name cannot be null")
-            .validate(User::getAge, age -> age > 21, "user is underage")
+            .validate(User::name, Objects::nonNull, "name cannot be null")
+            .validate(User::age, age -> age > 21, "user is underage")
             .get()
     );
   }
@@ -62,10 +62,10 @@ class MonadTest {
   void testForValid() {
     var sarah = new User("Sarah", 42, Sex.FEMALE, "sarah@det.org");
     var validated = Validator.of(sarah)
-        .validate(User::getName, Objects::nonNull, "name cannot be null")
-        .validate(User::getAge, age -> age > 21, "user is underage")
-        .validate(User::getSex, sex -> sex == Sex.FEMALE, "user is not female")
-        .validate(User::getEmail, email -> email.contains("@"), "email does not contain @ sign")
+        .validate(User::name, Objects::nonNull, "name cannot be null")
+        .validate(User::age, age -> age > 21, "user is underage")
+        .validate(User::sex, sex -> sex == Sex.FEMALE, "user is not female")
+        .validate(User::email, email -> email.contains("@"), "email does not contain @ sign")
         .get();
     assertSame(validated, sarah);
   }