Record vs Final class in Java (#13455)

* Added code for record vs final.

* Fixed a small mistake.

core-java-modules/core-java-14/src/main/java/com/baeldung/java14/recordvsfinal/USCitizen.java

@@ -0,0 +1,18 @@
+package com.baeldung.java14.recordvsfinal;
+
+public record USCitizen(String firstName, String lastName, String address) {
+    static int countryCode;
+
+    // static initializer
+    static {
+        countryCode = 1;
+    }
+
+    public static int getCountryCode() {
+        return countryCode;
+    }
+
+    public String getFullName() {
+        return firstName + " " + lastName;
+    }
+}

core-java-modules/core-java-14/src/test/java/com/baeldung/java14/recordvsfinal/USCitizenUnitTest.java

@@ -0,0 +1,26 @@
+package com.baeldung.java14.recordvsfinal;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNotEquals;
+import static org.junit.Assert.assertTrue;
+
+import org.junit.Test;
+
+public class USCitizenUnitTest {
+
+    @Test
+    public void givenName_whenGetNameAndCode_thenExpectedValuesReturned() {
+
+        String firstName = "Joan";
+        String lastName = "Winn";
+        String address = "1892 Black Stallion Road";
+        int countryCode = 1;
+
+        USCitizen citizen = new USCitizen(firstName, lastName, address);
+
+        assertEquals(firstName + " " + lastName, citizen.getFullName());
+        assertEquals(countryCode, USCitizen.getCountryCode());
+    }
+
+}