Java-14972: changes made for adding new example using field annoted @… (#13746)

* Java-19389: changes made for adding new example using field annoted @jsonValue

* Java-14972: Changes made for renaming the test methods and removing commented code

* dev-14972 : Changes made for incorporating review comments

* dev-14972: changes made for adding GeneralBean class and test cases of jsonValue against the GeneralBean class

jackson-simple/src/main/java/com/baeldung/jackson/annotation/GeneralBean.java

@@ -0,0 +1,26 @@
+package com.baeldung.jackson.annotation;
+
+import com.fasterxml.jackson.annotation.JsonValue;
+
+public class GeneralBean {
+    Integer id;
+
+    @JsonValue
+    String name;
+
+    public GeneralBean() {
+    }
+
+    public GeneralBean(Integer id, String name) {
+        this.id = id;
+        this.name = name;
+    }
+
+    public Integer getId() {
+        return id;
+    }
+
+    public String getName() {
+        return name;
+    }
+}

jackson-simple/src/main/java/com/baeldung/jackson/annotation/dtos/withEnum/TypeEnumWithValue.java

@@ -0,0 +1,23 @@
+package com.baeldung.jackson.annotation.dtos.withEnum;
+
+import com.fasterxml.jackson.annotation.JsonValue;
+
+public enum TypeEnumWithValue {
+    TYPE1(1, "Type A"), TYPE2(2, "Type 2");
+
+    private Integer id;
+
+    @JsonValue
+    private String name;
+
+
+    TypeEnumWithValue(int id, String name) {
+        this.id = id;
+        this.name = name;
+    }
+
+    //@JsonValue
+    public String getName() {
+        return name;
+    }
+}

jackson-simple/src/test/java/com/baeldung/jackson/annotation/JacksonAnnotationUnitTest.java

@@ -20,6 +20,7 @@ import com.baeldung.jackson.annotation.bidirection.UserWithIdentity;
 import com.baeldung.jackson.annotation.bidirection.UserWithRef;
 import com.baeldung.jackson.annotation.date.EventWithFormat;
 import com.baeldung.jackson.annotation.date.EventWithSerializer;
+import com.baeldung.jackson.annotation.dtos.withEnum.TypeEnumWithValue;
 import com.baeldung.jackson.annotation.ignore.MyMixInForIgnoreType;
 import com.baeldung.jackson.annotation.dtos.withEnum.DistanceEnumWithValue;
 import com.baeldung.jackson.annotation.exception.UserWithRoot;
@@ -95,6 +96,7 @@ public class JacksonAnnotationUnitTest {
         assertThat(enumAsString, is("1609.34"));
     }
 
+
     @Test
     public void whenSerializingUsingJsonSerialize_thenCorrect() throws JsonProcessingException, ParseException {
         final SimpleDateFormat df = new SimpleDateFormat("dd-MM-yyyy hh:mm:ss");
@@ -107,6 +109,19 @@ public class JacksonAnnotationUnitTest {
         assertThat(result, containsString(toParse));
     }
 
+    @Test
+    public void whenSerializingUsingJsonValueAnnotatedField_thenCorrect() throws JsonProcessingException {
+        final String enumValue = new ObjectMapper().writeValueAsString(TypeEnumWithValue.TYPE1);
+        assertThat(enumValue, is("\"Type A\""));
+    }
+
+    @Test
+    public void whenSerializingUsingJsonValueAnnotatedFieldInPojo_thenCorrect() throws JsonProcessingException {
+        GeneralBean bean1 = new GeneralBean(1, "Bean 1");
+        final String bean1AsString = new ObjectMapper().writeValueAsString(bean1);
+        assertThat(bean1AsString, is("\"Bean 1\""));
+    }
+
     // ========================= Deserializing annotations ============================
 
     @Test
@@ -118,6 +133,7 @@ public class JacksonAnnotationUnitTest {
         assertEquals("My bean", bean.name);
     }
 
+
     @Test
     public void whenDeserializingUsingJsonInject_thenCorrect() throws IOException {
         final String json = "{\"name\":\"My bean\"}";
@@ -161,6 +177,23 @@ public class JacksonAnnotationUnitTest {
         assertEquals("20-12-2014 02:30:00", df.format(event.eventDate));
     }
 
+    @Test
+    public void whenDeserializingUsingJsonValue_thenCorrect() throws JsonProcessingException {
+        final String str = "\"Type A\"";
+        TypeEnumWithValue te = new ObjectMapper().readerFor(TypeEnumWithValue.class)
+            .readValue(str);
+        assertThat(te, is(TypeEnumWithValue.TYPE1));
+    }
+
+    @Test(expected = Exception.class)
+    public void whenDeserializingUsingJsonValueAnnotatedFieldInPojo_thenGetException() throws JsonProcessingException {
+        GeneralBean bean1 = new GeneralBean(1, "Bean 1");
+        final String bean1AsString = new ObjectMapper().writeValueAsString(bean1);
+        GeneralBean bean = new ObjectMapper().readerFor(GeneralBean.class)
+            .readValue(bean1AsString);
+        assertThat(bean.getName(), is(bean1.getName()));
+    }
+
     // ========================= Inclusion annotations ============================
 
     @Test