JAVA-17420 Update The transient Keyword in Java Article (#13321)

Co-authored-by: Iulian Timis <iulian.timis@tora.com>

core-java-modules/core-java-lang-3/src/main/java/com/baeldung/transientkw/Book.java

@@ -11,6 +11,8 @@ public class Book implements Serializable {
     private transient int copies;
     private final transient String bookCategory = "Fiction";
 
+    private final transient String bookCategoryNewOperator = new String("Fiction with new Operator");
+
     public String getBookName() {
         return bookName;
     }
@@ -39,4 +41,7 @@ public class Book implements Serializable {
         return bookCategory;
     }
 
+    public String getBookCategoryNewOperator() {
+        return bookCategoryNewOperator;
+    }
 }

core-java-modules/core-java-lang-3/src/test/java/com/baeldung/transientkw/TransientUnitTest.java

@@ -34,7 +34,17 @@ class TransientUnitTest {
         
         assertEquals("Fiction", book2.getBookCategory());     
     }
-    
+
+    @Test
+    void givenFinalTransientWithNewOperator_whenSerDe_thenValuePersisted() throws Exception {
+        Book book = new Book();
+
+        BookSerDe.serialize(book);
+        Book book2 = BookSerDe.deserialize();
+
+        assertNull(book2.getBookCategoryNewOperator());
+    }
+
     @AfterAll
     public static void cleanup() {
         File file = new File(BookSerDe.fileName);