[BAEL-19676] - Move articles out of jackson part 3

jackson/src/main/java/com/baeldung/jackson/jacksonvsgson/ActorJackson.java

@@ -1,4 +1,4 @@
-package com.baeldung.jackson.entities;
+package com.baeldung.jackson.jacksonvsgson;
 
 import java.text.DateFormat;
 import java.text.SimpleDateFormat;

jackson/src/main/java/com/baeldung/jackson/jacksonvsgson/ActorJacksonSerializer.java

@@ -1,11 +1,9 @@
-package com.baeldung.jackson.serialization;
+package com.baeldung.jackson.jacksonvsgson;
 
 import java.io.IOException;
 import java.text.SimpleDateFormat;
 import java.util.stream.Collectors;
 
-import com.baeldung.jackson.entities.ActorJackson;
-
 import com.fasterxml.jackson.core.JsonGenerator;
 import com.fasterxml.jackson.databind.SerializerProvider;
 import com.fasterxml.jackson.databind.ser.std.StdSerializer;

jackson/src/main/java/com/baeldung/jackson/jacksonvsgson/Movie.java

@@ -1,4 +1,4 @@
-package com.baeldung.jackson.entities;
+package com.baeldung.jackson.jacksonvsgson;
 
 import java.util.List;
 

jackson/src/main/java/com/baeldung/jackson/jacksonvsgson/MovieWithNullValue.java

@@ -1,4 +1,4 @@
-package com.baeldung.jackson.entities;
+package com.baeldung.jackson.jacksonvsgson;
 
 import com.fasterxml.jackson.annotation.JsonIgnore;
 

jackson/src/main/java/com/baeldung/jackson/node/JsonNodeIterator.java

@@ -0,0 +1,62 @@
+package com.baeldung.jackson.node;
+
+import java.util.Iterator;
+import java.util.Map.Entry;
+
+import com.fasterxml.jackson.databind.JsonNode;
+
+public class JsonNodeIterator {
+    
+    private static final String NEW_LINE = "\n";
+    private static final String FIELD_DELIMITER = ": ";
+    private static final String ARRAY_PREFIX = "- ";
+    private static final String YAML_PREFIX = "  ";
+    
+    public String toYaml(JsonNode root) {
+        StringBuilder yaml = new StringBuilder();
+        processNode(root, yaml, 0);
+        return yaml.toString();
+    }
+
+    private void processNode(JsonNode jsonNode, StringBuilder yaml, int depth) {
+        if (jsonNode.isValueNode()) {
+            yaml.append(jsonNode.asText());
+        }
+        else if (jsonNode.isArray()) {
+            for (JsonNode arrayItem : jsonNode) {
+                appendNodeToYaml(arrayItem, yaml, depth, true);
+            }
+        }
+        else if (jsonNode.isObject()) {
+            appendNodeToYaml(jsonNode, yaml, depth, false);
+        }
+    }
+    
+    private void appendNodeToYaml(JsonNode node, StringBuilder yaml, int depth, boolean isArrayItem) {
+        Iterator<Entry<String, JsonNode>> fields = node.fields();
+        boolean isFirst = true;
+        while (fields.hasNext()) {
+            Entry<String, JsonNode> jsonField = fields.next();
+            addFieldNameToYaml(yaml, jsonField.getKey(), depth, isArrayItem && isFirst);
+            processNode(jsonField.getValue(), yaml, depth+1);
+            isFirst = false;
+        }
+        
+    }
+
+    private void addFieldNameToYaml(StringBuilder yaml, String fieldName, int depth, boolean isFirstInArray) {
+        if (yaml.length()>0) {
+            yaml.append(NEW_LINE);
+            int requiredDepth = (isFirstInArray) ? depth-1 : depth;
+            for(int i = 0; i < requiredDepth; i++) {
+                yaml.append(YAML_PREFIX);
+            }
+            if (isFirstInArray) {
+                yaml.append(ARRAY_PREFIX);
+            }
+        }
+        yaml.append(fieldName);
+        yaml.append(FIELD_DELIMITER);
+    }
+
+}

jackson/src/main/java/com/baeldung/jackson/objectmapper/CustomCarDeserializer.java

@@ -1,42 +0,0 @@
-package com.baeldung.jackson.objectmapper;
-
-import java.io.IOException;
-
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-import com.baeldung.jackson.objectmapper.dto.Car;
-import com.fasterxml.jackson.core.JsonParser;
-import com.fasterxml.jackson.core.ObjectCodec;
-import com.fasterxml.jackson.databind.DeserializationContext;
-import com.fasterxml.jackson.databind.JsonNode;
-import com.fasterxml.jackson.databind.deser.std.StdDeserializer;
-
-public class CustomCarDeserializer extends StdDeserializer<Car> {
-
-    private static final long serialVersionUID = -5918629454846356161L;
-    private final Logger Logger = LoggerFactory.getLogger(getClass());
-
-    public CustomCarDeserializer() {
-        this(null);
-    }
-
-    public CustomCarDeserializer(final Class<?> vc) {
-        super(vc);
-    }
-
-    @Override
-    public Car deserialize(final JsonParser parser, final DeserializationContext deserializer) throws IOException {
-        final Car car = new Car();
-        final ObjectCodec codec = parser.getCodec();
-        final JsonNode node = codec.readTree(parser);
-        try {
-            final JsonNode colorNode = node.get("color");
-            final String color = colorNode.asText();
-            car.setColor(color);
-        } catch (final Exception e) {
-            Logger.debug("101_parse_exeption: unknown json.");
-        }
-        return car;
-    }
-}

jackson/src/main/java/com/baeldung/jackson/objectmapper/CustomCarSerializer.java

@@ -1,29 +0,0 @@
-package com.baeldung.jackson.objectmapper;
-
-import java.io.IOException;
-
-import com.baeldung.jackson.objectmapper.dto.Car;
-import com.fasterxml.jackson.core.JsonGenerator;
-import com.fasterxml.jackson.core.JsonProcessingException;
-import com.fasterxml.jackson.databind.SerializerProvider;
-import com.fasterxml.jackson.databind.ser.std.StdSerializer;
-
-public class CustomCarSerializer extends StdSerializer<Car> {
-
-    private static final long serialVersionUID = 1396140685442227917L;
-
-    public CustomCarSerializer() {
-        this(null);
-    }
-
-    public CustomCarSerializer(final Class<Car> t) {
-        super(t);
-    }
-
-    @Override
-    public void serialize(final Car car, final JsonGenerator jsonGenerator, final SerializerProvider serializer) throws IOException, JsonProcessingException {
-        jsonGenerator.writeStartObject();
-        jsonGenerator.writeStringField("model: ", car.getType());
-        jsonGenerator.writeEndObject();
-    }
-}

jackson/src/main/java/com/baeldung/jackson/objectmapper/dto/Car.java

@@ -1,31 +0,0 @@
-package com.baeldung.jackson.objectmapper.dto;
-
-public class Car {
-
-    private String color;
-    private String type;
-
-    public Car() {
-    }
-
-    public Car(final String color, final String type) {
-        this.color = color;
-        this.type = type;
-    }
-
-    public String getColor() {
-        return color;
-    }
-
-    public void setColor(final String color) {
-        this.color = color;
-    }
-
-    public String getType() {
-        return type;
-    }
-
-    public void setType(final String type) {
-        this.type = type;
-    }
-}

jackson/src/main/java/com/baeldung/jackson/objectmapper/dto/Request.java

@@ -1,24 +0,0 @@
-package com.baeldung.jackson.objectmapper.dto;
-
-import java.util.Date;
-
-public class Request {
-    Car car;
-    Date datePurchased;
-
-    public Car getCar() {
-        return car;
-    }
-
-    public void setCar(final Car car) {
-        this.car = car;
-    }
-
-    public Date getDatePurchased() {
-        return datePurchased;
-    }
-
-    public void setDatePurchased(final Date datePurchased) {
-        this.datePurchased = datePurchased;
-    }
-}

jackson/src/main/java/com/baeldung/jackson/optionalwithjackson/Book.java

@@ -1,4 +1,4 @@
-package com.baeldung.jackson.miscellaneous.mixin;
+package com.baeldung.jackson.optionalwithjackson;
 
 import java.util.Optional;
 

jackson/src/test/java/com/baeldung/jackson/deserialization/ItemDeserializer.java

@@ -1,41 +0,0 @@
-package com.baeldung.jackson.deserialization;
-
-import java.io.IOException;
-
-import com.baeldung.jackson.dtos.Item;
-import com.baeldung.jackson.dtos.User;
-import com.fasterxml.jackson.core.JsonParser;
-import com.fasterxml.jackson.core.JsonProcessingException;
-import com.fasterxml.jackson.databind.DeserializationContext;
-import com.fasterxml.jackson.databind.JsonNode;
-import com.fasterxml.jackson.databind.deser.std.StdDeserializer;
-import com.fasterxml.jackson.databind.node.IntNode;
-
-public class ItemDeserializer extends StdDeserializer<Item> {
-
-    private static final long serialVersionUID = 1883547683050039861L;
-
-    public ItemDeserializer() {
-        this(null);
-    }
-
-    public ItemDeserializer(final Class<?> vc) {
-        super(vc);
-    }
-
-    /**
-     * {"id":1,"itemNr":"theItem","owner":2}
-     */
-    @Override
-    public Item deserialize(final JsonParser jp, final DeserializationContext ctxt) throws IOException, JsonProcessingException {
-        final JsonNode node = jp.getCodec()
-            .readTree(jp);
-        final int id = (Integer) ((IntNode) node.get("id")).numberValue();
-        final String itemName = node.get("itemName")
-            .asText();
-        final int userId = (Integer) ((IntNode) node.get("createdBy")).numberValue();
-
-        return new Item(id, itemName, new User(userId, null));
-    }
-
-}

jackson/src/test/java/com/baeldung/jackson/deserialization/ItemDeserializerOnClass.java

@@ -1,41 +0,0 @@
-package com.baeldung.jackson.deserialization;
-
-import java.io.IOException;
-
-import com.baeldung.jackson.dtos.ItemWithSerializer;
-import com.baeldung.jackson.dtos.User;
-import com.fasterxml.jackson.core.JsonParser;
-import com.fasterxml.jackson.core.JsonProcessingException;
-import com.fasterxml.jackson.databind.DeserializationContext;
-import com.fasterxml.jackson.databind.JsonNode;
-import com.fasterxml.jackson.databind.deser.std.StdDeserializer;
-import com.fasterxml.jackson.databind.node.IntNode;
-
-public class ItemDeserializerOnClass extends StdDeserializer<ItemWithSerializer> {
-
-    private static final long serialVersionUID = 5579141241817332594L;
-
-    public ItemDeserializerOnClass() {
-        this(null);
-    }
-
-    public ItemDeserializerOnClass(final Class<?> vc) {
-        super(vc);
-    }
-
-    /**
-     * {"id":1,"itemNr":"theItem","owner":2}
-     */
-    @Override
-    public ItemWithSerializer deserialize(final JsonParser jp, final DeserializationContext ctxt) throws IOException, JsonProcessingException {
-        final JsonNode node = jp.getCodec()
-            .readTree(jp);
-        final int id = (Integer) ((IntNode) node.get("id")).numberValue();
-        final String itemName = node.get("itemName")
-            .asText();
-        final int userId = (Integer) ((IntNode) node.get("owner")).numberValue();
-
-        return new ItemWithSerializer(id, itemName, new User(userId, null));
-    }
-
-}

jackson/src/test/java/com/baeldung/jackson/dtos/Item.java

@@ -1,32 +0,0 @@
-package com.baeldung.jackson.dtos;
-
-public class Item {
-    public int id;
-    public String itemName;
-    public User owner;
-
-    public Item() {
-        super();
-    }
-
-    public Item(final int id, final String itemName, final User owner) {
-        this.id = id;
-        this.itemName = itemName;
-        this.owner = owner;
-    }
-
-    // API
-
-    public int getId() {
-        return id;
-    }
-
-    public String getItemName() {
-        return itemName;
-    }
-
-    public User getOwner() {
-        return owner;
-    }
-
-}

jackson/src/test/java/com/baeldung/jackson/dtos/ItemWithSerializer.java

@@ -1,36 +0,0 @@
-package com.baeldung.jackson.dtos;
-
-import com.baeldung.jackson.deserialization.ItemDeserializerOnClass;
-import com.baeldung.jackson.serialization.ItemSerializerOnClass;
-
-import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
-import com.fasterxml.jackson.databind.annotation.JsonSerialize;
-
-@JsonSerialize(using = ItemSerializerOnClass.class)
-@JsonDeserialize(using = ItemDeserializerOnClass.class)
-public class ItemWithSerializer {
-    public final int id;
-    public final String itemName;
-    public final User owner;
-
-    public ItemWithSerializer(final int id, final String itemName, final User owner) {
-        this.id = id;
-        this.itemName = itemName;
-        this.owner = owner;
-    }
-
-    // API
-
-    public int getId() {
-        return id;
-    }
-
-    public String getItemName() {
-        return itemName;
-    }
-
-    public User getOwner() {
-        return owner;
-    }
-
-}

jackson/src/test/java/com/baeldung/jackson/dynamicIgnore/Address.java

@@ -1,40 +0,0 @@
-package com.baeldung.jackson.dynamicIgnore;
-
-public class Address implements Hidable {
-    private String city;
-    private String country;
-    private boolean hidden;
-
-    public Address(final String city, final String country, final boolean hidden) {
-        super();
-        this.city = city;
-        this.country = country;
-        this.hidden = hidden;
-    }
-
-    public String getCity() {
-        return city;
-    }
-
-    public void setCity(final String city) {
-        this.city = city;
-    }
-
-    public String getCountry() {
-        return country;
-    }
-
-    public void setCountry(final String country) {
-        this.country = country;
-    }
-
-    @Override
-    public boolean isHidden() {
-        return hidden;
-    }
-
-    public void setHidden(final boolean hidden) {
-        this.hidden = hidden;
-    }
-
-}

jackson/src/test/java/com/baeldung/jackson/dynamicIgnore/Hidable.java

@@ -1,8 +0,0 @@
-package com.baeldung.jackson.dynamicIgnore;
-
-import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
-
-@JsonIgnoreProperties("hidden")
-public interface Hidable {
-    boolean isHidden();
-}

jackson/src/test/java/com/baeldung/jackson/dynamicIgnore/HidableSerializer.java

@@ -1,29 +0,0 @@
-package com.baeldung.jackson.dynamicIgnore;
-
-import java.io.IOException;
-
-import com.fasterxml.jackson.core.JsonGenerator;
-import com.fasterxml.jackson.core.JsonProcessingException;
-import com.fasterxml.jackson.databind.JsonSerializer;
-import com.fasterxml.jackson.databind.SerializerProvider;
-
-public class HidableSerializer extends JsonSerializer<Hidable> {
-
-    private JsonSerializer<Object> defaultSerializer;
-
-    public HidableSerializer(final JsonSerializer<Object> serializer) {
-        defaultSerializer = serializer;
-    }
-
-    @Override
-    public void serialize(final Hidable value, final JsonGenerator jgen, final SerializerProvider provider) throws IOException, JsonProcessingException {
-        if (value.isHidden())
-            return;
-        defaultSerializer.serialize(value, jgen, provider);
-    }
-
-    @Override
-    public boolean isEmpty(final SerializerProvider provider, final Hidable value) {
-        return (value == null || value.isHidden());
-    }
-}

jackson/src/test/java/com/baeldung/jackson/dynamicIgnore/Person.java

@@ -1,40 +0,0 @@
-package com.baeldung.jackson.dynamicIgnore;
-
-public class Person implements Hidable {
-    private String name;
-    private Address address;
-    private boolean hidden;
-
-    public Person(final String name, final Address address, final boolean hidden) {
-        super();
-        this.name = name;
-        this.address = address;
-        this.hidden = hidden;
-    }
-
-    public String getName() {
-        return name;
-    }
-
-    public void setName(final String name) {
-        this.name = name;
-    }
-
-    public Address getAddress() {
-        return address;
-    }
-
-    public void setAddress(final Address address) {
-        this.address = address;
-    }
-
-    @Override
-    public boolean isHidden() {
-        return hidden;
-    }
-
-    public void setHidden(final boolean hidden) {
-        this.hidden = hidden;
-    }
-
-}

jackson/src/test/java/com/baeldung/jackson/jacksonvsgson/JacksonDeserializeUnitTest.java

@@ -1,9 +1,8 @@
-package com.baeldung.jackson.deserialization;
+package com.baeldung.jackson.jacksonvsgson;
 
 import java.io.IOException;
 import java.text.DateFormat;
 import java.text.SimpleDateFormat;
-import com.baeldung.jackson.entities.Movie;
 import org.junit.Test;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import static org.junit.Assert.assertEquals;

jackson/src/test/java/com/baeldung/jackson/jacksonvsgson/JacksonSerializeUnitTest.java

@@ -1,4 +1,4 @@
-package com.baeldung.jackson.serialization;
+package com.baeldung.jackson.jacksonvsgson;
 
 import java.io.IOException;
 import java.text.ParseException;
@@ -6,9 +6,6 @@ import java.text.SimpleDateFormat;
 import java.util.Arrays;
 import java.util.TimeZone;
 
-import com.baeldung.jackson.entities.ActorJackson;
-import com.baeldung.jackson.entities.Movie;
-import com.baeldung.jackson.entities.MovieWithNullValue;
 import org.junit.Assert;
 import org.junit.Test;
 

jackson/src/test/java/com/baeldung/jackson/jsoncompare/JsonCompareUnitTest.java

@@ -0,0 +1,126 @@
+package com.baeldung.jackson.jsoncompare;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotEquals;
+import static org.junit.Assert.assertTrue;
+
+import java.io.IOException;
+import java.util.Comparator;
+
+import org.junit.Test;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.node.NumericNode;
+import com.fasterxml.jackson.databind.node.TextNode;
+
+public class JsonCompareUnitTest {
+
+    @Test
+    public void givenTwoSameJsonDataObjects_whenCompared_thenAreEqual() throws IOException {
+        ObjectMapper mapper = new ObjectMapper();
+
+        String s1 = "{\"employee\": {\"id\": \"1212\",\"fullName\": \"John Miles\", \"age\": 34 }}";
+        String s2 = "{\"employee\": {\"id\": \"1212\",\"age\": 34, \"fullName\": \"John Miles\" }}";
+
+        JsonNode actualObj1 = mapper.readTree(s1);
+        JsonNode actualObj2 = mapper.readTree(s2);
+
+        assertEquals(actualObj1, actualObj2);
+
+    }
+
+    @Test
+    public void givenTwoSameNestedJsonDataObjects_whenCompared_thenEqual() throws IOException {
+        ObjectMapper mapper = new ObjectMapper();
+
+        String s1 = "{\"employee\": {\"id\": \"1212\",\"fullName\": \"John Miles\",\"age\": 34, \"contact\":{\"email\": \"john@xyz.com\",\"phone\": \"9999999999\"} }}";
+        String s2 = "{\"employee\": {\"id\": \"1212\",\"fullName\": \"John Miles\",\"age\": 34, \"contact\":{\"email\": \"john@xyz.com\",\"phone\": \"9999999999\"} }}";
+
+        JsonNode actualObj1 = mapper.readTree(s1);
+        JsonNode actualObj2 = mapper.readTree(s2);
+
+        assertEquals(actualObj1, actualObj2);
+
+    }
+
+    @Test
+    public void givenTwoSameListJsonDataObjects_whenCompared_thenEqual() throws IOException {
+        ObjectMapper mapper = new ObjectMapper();
+
+        String s1 = "{\"employee\": {\"id\": \"1212\",\"fullName\": \"John Miles\",\"age\": 34, \"skills\":[\"Java\", \"C++\", \"Python\"] }}";
+        String s2 = "{\"employee\": {\"id\": \"1212\",\"fullName\": \"John Miles\",\"age\": 34, \"skills\":[\"Java\", \"C++\", \"Python\"] }}";
+
+        JsonNode actualObj1 = mapper.readTree(s1);
+        JsonNode actualObj2 = mapper.readTree(s2);
+
+        assertEquals(actualObj1, actualObj2);
+
+    }
+
+    @Test
+    public void givenTwoJsonDataObjects_whenComparedUsingCustomNumericNodeComparator_thenEqual() throws IOException {
+        ObjectMapper mapper = new ObjectMapper();
+
+        String s1 = "{\"name\": \"John\",\"score\":5.0}";
+        String s2 = "{\"name\": \"John\",\"score\":5}";
+        JsonNode actualObj1 = mapper.readTree(s1);
+        JsonNode actualObj2 = mapper.readTree(s2);
+
+        NumericNodeComparator cmp = new NumericNodeComparator();
+
+        assertNotEquals(actualObj1, actualObj2);
+        assertTrue(actualObj1.equals(cmp, actualObj2));
+
+    }
+    
+    public class NumericNodeComparator implements Comparator<JsonNode> {
+        @Override
+        public int compare(JsonNode o1, JsonNode o2) {
+            if (o1.equals(o2)) {
+                return 0;
+            }
+            if ((o1 instanceof NumericNode) && (o2 instanceof NumericNode)) {
+                Double d1 = ((NumericNode) o1).asDouble();
+                Double d2 = ((NumericNode) o2).asDouble();
+                if (d1.compareTo(d2) == 0) {
+                    return 0;
+                }
+            }
+            return 1;
+        }
+    }
+    
+    @Test
+    public void givenTwoJsonDataObjects_whenComparedUsingCustomTextNodeComparator_thenEqual() throws IOException {
+        ObjectMapper mapper = new ObjectMapper();
+
+        String s1 = "{\"name\": \"JOHN\",\"score\":5}";
+        String s2 = "{\"name\": \"John\",\"score\":5}";
+        JsonNode actualObj1 = mapper.readTree(s1);
+        JsonNode actualObj2 = mapper.readTree(s2);
+
+        TextNodeComparator cmp = new TextNodeComparator();
+
+        assertNotEquals(actualObj1, actualObj2);
+        assertTrue(actualObj1.equals(cmp, actualObj2));
+
+    }
+    
+    public class TextNodeComparator implements Comparator<JsonNode> {
+        @Override
+        public int compare(JsonNode o1, JsonNode o2) {
+            if (o1.equals(o2)) {
+                return 0;
+            }
+            if ((o1 instanceof TextNode) && (o2 instanceof TextNode)) {
+                String s1 = ((TextNode) o1).asText();
+                String s2 = ((TextNode) o2).asText();
+                if (s1.equalsIgnoreCase(s2)) {
+                    return 0;
+                }
+            }
+            return 1;
+        }
+    }
+}

jackson/src/test/java/com/baeldung/jackson/jsonview/Item.java

@@ -1,36 +0,0 @@
-package com.baeldung.jackson.jsonview;
-
-import com.fasterxml.jackson.annotation.JsonView;
-
-public class Item {
-    @JsonView(Views.Public.class)
-    public int id;
-
-    @JsonView(Views.Public.class)
-    public String itemName;
-
-    @JsonView(Views.Internal.class)
-    public String ownerName;
-
-    public Item() {
-        super();
-    }
-
-    public Item(final int id, final String itemName, final String ownerName) {
-        this.id = id;
-        this.itemName = itemName;
-        this.ownerName = ownerName;
-    }
-
-    public int getId() {
-        return id;
-    }
-
-    public String getItemName() {
-        return itemName;
-    }
-
-    public String getOwnerName() {
-        return ownerName;
-    }
-}

jackson/src/test/java/com/baeldung/jackson/jsonview/MyBeanSerializerModifier.java

@@ -1,22 +0,0 @@
-package com.baeldung.jackson.jsonview;
-
-import java.util.List;
-
-import com.fasterxml.jackson.databind.BeanDescription;
-import com.fasterxml.jackson.databind.SerializationConfig;
-import com.fasterxml.jackson.databind.ser.BeanPropertyWriter;
-import com.fasterxml.jackson.databind.ser.BeanSerializerModifier;
-
-public class MyBeanSerializerModifier extends BeanSerializerModifier {
-
-    @Override
-    public List<BeanPropertyWriter> changeProperties(final SerializationConfig config, final BeanDescription beanDesc, final List<BeanPropertyWriter> beanProperties) {
-        for (int i = 0; i < beanProperties.size(); i++) {
-            final BeanPropertyWriter beanPropertyWriter = beanProperties.get(i);
-            if (beanPropertyWriter.getName() == "name") {
-                beanProperties.set(i, new UpperCasingWriter(beanPropertyWriter));
-            }
-        }
-        return beanProperties;
-    }
-}

jackson/src/test/java/com/baeldung/jackson/jsonview/UpperCasingWriter.java

@@ -1,21 +0,0 @@
-package com.baeldung.jackson.jsonview;
-
-import com.fasterxml.jackson.core.JsonGenerator;
-import com.fasterxml.jackson.databind.SerializerProvider;
-import com.fasterxml.jackson.databind.ser.BeanPropertyWriter;
-
-public class UpperCasingWriter extends BeanPropertyWriter {
-    final BeanPropertyWriter _writer;
-
-    public UpperCasingWriter(final BeanPropertyWriter w) {
-        super(w);
-        _writer = w;
-    }
-
-    @Override
-    public void serializeAsField(final Object bean, final JsonGenerator gen, final SerializerProvider prov) throws Exception {
-        String value = ((User) bean).name;
-        value = (value == null) ? "" : value.toUpperCase();
-        gen.writeStringField("name", value);
-    }
-}

jackson/src/test/java/com/baeldung/jackson/jsonview/User.java

@@ -1,27 +0,0 @@
-package com.baeldung.jackson.jsonview;
-
-import com.fasterxml.jackson.annotation.JsonView;
-
-public class User {
-    public int id;
-
-    @JsonView(Views.Public.class)
-    public String name;
-
-    public User() {
-        super();
-    }
-
-    public User(final int id, final String name) {
-        this.id = id;
-        this.name = name;
-    }
-
-    public int getId() {
-        return id;
-    }
-
-    public String getName() {
-        return name;
-    }
-}

jackson/src/test/java/com/baeldung/jackson/jsonview/Views.java

@@ -1,9 +0,0 @@
-package com.baeldung.jackson.jsonview;
-
-public class Views {
-    public static class Public {
-    }
-
-    public static class Internal extends Public {
-    }
-}

jackson/src/test/java/com/baeldung/jackson/node/ExampleStructure.java

@@ -0,0 +1,18 @@
+package com.baeldung.jackson.node;
+
+import java.io.IOException;
+import java.io.InputStream;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+public class ExampleStructure {
+    private static ObjectMapper mapper = new ObjectMapper();
+
+    static JsonNode getExampleRoot() throws IOException {
+        InputStream exampleInput = ExampleStructure.class.getClassLoader()
+            .getResourceAsStream("node_example.json");
+        JsonNode rootNode = mapper.readTree(exampleInput);
+        return rootNode;
+    }
+}

jackson/src/test/java/com/baeldung/jackson/node/JsonNodeIteratorUnitTest.java

@@ -0,0 +1,37 @@
+package com.baeldung.jackson.node;
+
+import static org.junit.Assert.assertEquals;
+
+import java.io.IOException;
+
+import org.junit.Test;
+
+import com.fasterxml.jackson.databind.JsonNode;
+
+public class JsonNodeIteratorUnitTest {
+
+    private JsonNodeIterator onTest = new JsonNodeIterator();
+    private static String expectedYaml = "name: \n" + 
+        "  first: Tatu\n" + 
+        "  last: Saloranta\n" + 
+        "title: Jackson founder\n" + 
+        "company: FasterXML\n" + 
+        "pets: \n" + 
+        "- type: dog\n" + 
+        "  number: 1\n" + 
+        "- type: fish\n" + 
+        "  number: 50";
+    
+@Test
+public void givenANodeTree_whenIteratingSubNodes_thenWeFindExpected() throws IOException {
+    final JsonNode rootNode = ExampleStructure.getExampleRoot();
+    
+    String yaml = onTest.toYaml(rootNode);
+    System.out.println(yaml.toString());
+
+    assertEquals(expectedYaml, yaml);
+    
+}
+
+
+}

jackson/src/test/java/com/baeldung/jackson/node/NodeBean.java

@@ -0,0 +1,30 @@
+package com.baeldung.jackson.node;
+
+public class NodeBean {
+    private int id;
+    private String name;
+
+    public NodeBean() {
+    }
+
+    public NodeBean(int id, String name) {
+        this.id = id;
+        this.name = name;
+    }
+
+    public int getId() {
+        return id;
+    }
+
+    public void setId(int id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+}

jackson/src/test/java/com/baeldung/jackson/node/NodeOperationUnitTest.java

@@ -0,0 +1,119 @@
+package com.baeldung.jackson.node;
+
+import static org.hamcrest.CoreMatchers.containsString;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertThat;
+import static org.junit.Assert.assertTrue;
+
+import java.io.FileReader;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+
+import org.junit.Test;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.node.ObjectNode;
+
+public class NodeOperationUnitTest {
+    private static ObjectMapper mapper = new ObjectMapper();
+
+    @Test
+    public void givenAnObject_whenConvertingIntoNode_thenCorrect() {
+        final NodeBean fromValue = new NodeBean(2016, "baeldung.com");
+
+        final JsonNode node = mapper.valueToTree(fromValue);
+
+        assertEquals(2016, node.get("id")
+            .intValue());
+        assertEquals("baeldung.com", node.get("name")
+            .textValue());
+    }
+
+    @Test
+    public void givenANode_whenWritingOutAsAJsonString_thenCorrect() throws IOException {
+        final String pathToTestFile = "node_to_json_test.json";
+        final char[] characterBuffer = new char[50];
+
+        final JsonNode node = mapper.createObjectNode();
+        ((ObjectNode) node).put("id", 2016);
+        ((ObjectNode) node).put("name", "baeldung.com");
+
+        try (FileWriter outputStream = new FileWriter(pathToTestFile)) {
+            mapper.writeValue(outputStream, node);
+        }
+
+        try (FileReader inputStreamForAssertion = new FileReader(pathToTestFile)) {
+            inputStreamForAssertion.read(characterBuffer);
+        }
+        final String textContentOfTestFile = new String(characterBuffer);
+
+        assertThat(textContentOfTestFile, containsString("2016"));
+        assertThat(textContentOfTestFile, containsString("baeldung.com"));
+
+        Files.delete(Paths.get(pathToTestFile));
+    }
+
+    @Test
+    public void givenANode_whenConvertingIntoAnObject_thenCorrect() throws JsonProcessingException {
+        final JsonNode node = mapper.createObjectNode();
+        ((ObjectNode) node).put("id", 2016);
+        ((ObjectNode) node).put("name", "baeldung.com");
+
+        final NodeBean toValue = mapper.treeToValue(node, NodeBean.class);
+
+        assertEquals(2016, toValue.getId());
+        assertEquals("baeldung.com", toValue.getName());
+    }
+
+    @Test
+    public void givenANode_whenAddingIntoATree_thenCorrect() throws IOException {
+        final JsonNode rootNode = ExampleStructure.getExampleRoot();
+        final ObjectNode addedNode = ((ObjectNode) rootNode).putObject("address");
+        addedNode.put("city", "Seattle")
+            .put("state", "Washington")
+            .put("country", "United States");
+
+        assertFalse(rootNode.path("address")
+            .isMissingNode());
+        assertEquals("Seattle", rootNode.path("address")
+            .path("city")
+            .textValue());
+        assertEquals("Washington", rootNode.path("address")
+            .path("state")
+            .textValue());
+        assertEquals("United States", rootNode.path("address")
+            .path("country")
+            .textValue());
+    }
+
+    @Test
+    public void givenANode_whenModifyingIt_thenCorrect() throws IOException {
+        final String newString = "{\"nick\": \"cowtowncoder\"}";
+        final JsonNode newNode = mapper.readTree(newString);
+
+        final JsonNode rootNode = ExampleStructure.getExampleRoot();
+        ((ObjectNode) rootNode).set("name", newNode);
+
+        assertFalse(rootNode.path("name")
+            .path("nick")
+            .isMissingNode());
+        assertEquals("cowtowncoder", rootNode.path("name")
+            .path("nick")
+            .textValue());
+    }
+
+    @Test
+    public void givenANode_whenRemovingFromATree_thenCorrect() throws IOException {
+        final JsonNode rootNode = ExampleStructure.getExampleRoot();
+        ((ObjectNode) rootNode).remove("company");
+
+        assertTrue(rootNode.path("company")
+            .isMissingNode());
+    }
+
+}

jackson/src/test/java/com/baeldung/jackson/objectmapper/JavaReadWriteJsonExampleUnitTest.java

@@ -1,114 +0,0 @@
-package com.baeldung.jackson.objectmapper;
-
-import static org.hamcrest.Matchers.containsString;
-import static org.hamcrest.Matchers.equalTo;
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertNotNull;
-import static org.junit.Assert.assertThat;
-
-import java.io.File;
-import java.net.URL;
-import java.util.List;
-import java.util.Map;
-
-import org.junit.Rule;
-import org.junit.Test;
-import org.junit.rules.TemporaryFolder;
-
-import com.baeldung.jackson.objectmapper.dto.Car;
-import com.fasterxml.jackson.core.type.TypeReference;
-import com.fasterxml.jackson.databind.JsonNode;
-import com.fasterxml.jackson.databind.ObjectMapper;
-
-public class JavaReadWriteJsonExampleUnitTest {
-
-    @Rule
-    public TemporaryFolder folder = new TemporaryFolder();
-
-    final String EXAMPLE_JSON = "{ \"color\" : \"Black\", \"type\" : \"BMW\" }";
-    final String LOCAL_JSON = "[{ \"color\" : \"Black\", \"type\" : \"BMW\" }, { \"color\" : \"Red\", \"type\" : \"BMW\" }]";
-
-    @Test
-    public void whenWriteJavaToJson_thanCorrect() throws Exception {
-        final ObjectMapper objectMapper = new ObjectMapper();
-        final Car car = new Car("yellow", "renault");
-        final String carAsString = objectMapper.writeValueAsString(car);
-        assertThat(carAsString, containsString("yellow"));
-        assertThat(carAsString, containsString("renault"));
-    }
-
-    @Test
-    public void whenWriteToFile_thanCorrect() throws Exception {
-        File resultFile = folder.newFile("car.json");
-
-        ObjectMapper objectMapper = new ObjectMapper();
-        Car car = new Car("yellow", "renault");
-        objectMapper.writeValue(resultFile, car);
-
-        Car fromFile = objectMapper.readValue(resultFile, Car.class);
-        assertEquals(car.getType(), fromFile.getType());
-        assertEquals(car.getColor(), fromFile.getColor());
-    }
-
-    @Test
-    public void whenReadJsonToJava_thanCorrect() throws Exception {
-        final ObjectMapper objectMapper = new ObjectMapper();
-        final Car car = objectMapper.readValue(EXAMPLE_JSON, Car.class);
-        assertNotNull(car);
-        assertThat(car.getColor(), containsString("Black"));
-    }
-
-    @Test
-    public void whenReadJsonToJsonNode_thanCorrect() throws Exception {
-        final ObjectMapper objectMapper = new ObjectMapper();
-        final JsonNode jsonNode = objectMapper.readTree(EXAMPLE_JSON);
-        assertNotNull(jsonNode);
-        assertThat(jsonNode.get("color")
-            .asText(), containsString("Black"));
-    }
-
-    @Test
-    public void whenReadJsonToList_thanCorrect() throws Exception {
-        final ObjectMapper objectMapper = new ObjectMapper();
-        final List<Car> listCar = objectMapper.readValue(LOCAL_JSON, new TypeReference<List<Car>>() {
-
-        });
-        for (final Car car : listCar) {
-            assertNotNull(car);
-            assertThat(car.getType(), equalTo("BMW"));
-        }
-    }
-
-    @Test
-    public void whenReadJsonToMap_thanCorrect() throws Exception {
-        final ObjectMapper objectMapper = new ObjectMapper();
-        final Map<String, Object> map = objectMapper.readValue(EXAMPLE_JSON, new TypeReference<Map<String, Object>>() {
-        });
-        assertNotNull(map);
-        for (final String key : map.keySet()) {
-            assertNotNull(key);
-        }
-    }
-
-    @Test
-    public void wheReadFromFile_thanCorrect() throws Exception {
-        File resource = new File("src/test/resources/json_car.json");
-
-        ObjectMapper objectMapper = new ObjectMapper();
-        Car fromFile = objectMapper.readValue(resource, Car.class);
-
-        assertEquals("BMW", fromFile.getType());
-        assertEquals("Black", fromFile.getColor());
-    }
-
-    @Test
-    public void wheReadFromUrl_thanCorrect() throws Exception {
-        URL resource = new URL("file:src/test/resources/json_car.json");
-
-        ObjectMapper objectMapper = new ObjectMapper();
-        Car fromFile = objectMapper.readValue(resource, Car.class);
-
-        assertEquals("BMW", fromFile.getType());
-        assertEquals("Black", fromFile.getColor());
-    }
-}

jackson/src/test/java/com/baeldung/jackson/objectmapper/SerializationDeserializationFeatureUnitTest.java

@@ -1,85 +0,0 @@
-package com.baeldung.jackson.objectmapper;
-
-import com.baeldung.jackson.objectmapper.dto.Car;
-import com.baeldung.jackson.objectmapper.dto.Request;
-import com.fasterxml.jackson.core.Version;
-import com.fasterxml.jackson.databind.DeserializationFeature;
-import com.fasterxml.jackson.databind.JsonNode;
-import com.fasterxml.jackson.databind.ObjectMapper;
-import com.fasterxml.jackson.databind.module.SimpleModule;
-import org.junit.Test;
-
-import java.text.DateFormat;
-import java.text.SimpleDateFormat;
-import java.util.Date;
-
-import static org.hamcrest.Matchers.containsString;
-import static org.hamcrest.Matchers.equalTo;
-import static org.junit.Assert.assertNotNull;
-import static org.junit.Assert.assertThat;
-
-public class SerializationDeserializationFeatureUnitTest {
-
-    final String EXAMPLE_JSON = "{ \"color\" : \"Black\", \"type\" : \"BMW\" }";
-    final String JSON_CAR = "{ \"color\" : \"Black\", \"type\" : \"Fiat\", \"year\" : \"1970\" }";
-    final String JSON_ARRAY = "[{ \"color\" : \"Black\", \"type\" : \"BMW\" }, { \"color\" : \"Red\", \"type\" : \"BMW\" }]";
-
-    @Test
-    public void whenFailOnUnkownPropertiesFalse_thanJsonReadCorrectly() throws Exception {
-
-        final ObjectMapper objectMapper = new ObjectMapper();
-        objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
-        final Car car = objectMapper.readValue(JSON_CAR, Car.class);
-        final JsonNode jsonNodeRoot = objectMapper.readTree(JSON_CAR);
-        final JsonNode jsonNodeYear = jsonNodeRoot.get("year");
-        final String year = jsonNodeYear.asText();
-
-        assertNotNull(car);
-        assertThat(car.getColor(), equalTo("Black"));
-        assertThat(year, containsString("1970"));
-    }
-
-    @Test
-    public void whenCustomSerializerDeserializer_thanReadWriteCorrect() throws Exception {
-        final ObjectMapper mapper = new ObjectMapper();
-        final SimpleModule serializerModule = new SimpleModule("CustomSerializer", new Version(1, 0, 0, null, null, null));
-        serializerModule.addSerializer(Car.class, new CustomCarSerializer());
-        mapper.registerModule(serializerModule);
-        final Car car = new Car("yellow", "renault");
-        final String carJson = mapper.writeValueAsString(car);
-        assertThat(carJson, containsString("renault"));
-        assertThat(carJson, containsString("model"));
-
-        final SimpleModule deserializerModule = new SimpleModule("CustomCarDeserializer", new Version(1, 0, 0, null, null, null));
-        deserializerModule.addDeserializer(Car.class, new CustomCarDeserializer());
-        mapper.registerModule(deserializerModule);
-        final Car carResult = mapper.readValue(EXAMPLE_JSON, Car.class);
-        assertNotNull(carResult);
-        assertThat(carResult.getColor(), equalTo("Black"));
-    }
-
-    @Test
-    public void whenDateFormatSet_thanSerializedAsExpected() throws Exception {
-        final ObjectMapper objectMapper = new ObjectMapper();
-        final Car car = new Car("yellow", "renault");
-        final Request request = new Request();
-        request.setCar(car);
-        request.setDatePurchased(new Date());
-        final DateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm a z");
-        objectMapper.setDateFormat(df);
-        final String carAsString = objectMapper.writeValueAsString(request);
-        assertNotNull(carAsString);
-        assertThat(carAsString, containsString("datePurchased"));
-    }
-
-    @Test
-    public void whenUseJavaArrayForJsonArrayTrue_thanJsonReadAsArray() throws Exception {
-        final ObjectMapper objectMapper = new ObjectMapper();
-        objectMapper.configure(DeserializationFeature.USE_JAVA_ARRAY_FOR_JSON_ARRAY, true);
-        final Car[] cars = objectMapper.readValue(JSON_ARRAY, Car[].class);
-        for (final Car car : cars) {
-            assertNotNull(car);
-            assertThat(car.getType(), equalTo("BMW"));
-        }
-    }
-}

jackson/src/test/java/com/baeldung/jackson/optionalwithjackson/OptionalTypeUnitTest.java

@@ -1,4 +1,4 @@
-package com.baeldung.jackson.miscellaneous.mixin;
+package com.baeldung.jackson.optionalwithjackson;
 
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.ObjectMapper;

jackson/src/test/java/com/baeldung/jackson/sandbox/SandboxUnitTest.java

@@ -26,6 +26,4 @@ public class SandboxUnitTest {
         System.err.println(serialized);
     }
 
-    //
-
 }

jackson/src/test/java/com/baeldung/jackson/serialization/ItemSerializerOnClass.java

@@ -1,32 +0,0 @@
-package com.baeldung.jackson.serialization;
-
-import java.io.IOException;
-
-import com.baeldung.jackson.dtos.ItemWithSerializer;
-import com.fasterxml.jackson.core.JsonGenerator;
-import com.fasterxml.jackson.core.JsonProcessingException;
-import com.fasterxml.jackson.databind.SerializerProvider;
-import com.fasterxml.jackson.databind.ser.std.StdSerializer;
-
-public class ItemSerializerOnClass extends StdSerializer<ItemWithSerializer> {
-
-    private static final long serialVersionUID = -1760959597313610409L;
-
-    public ItemSerializerOnClass() {
-        this(null);
-    }
-
-    public ItemSerializerOnClass(final Class<ItemWithSerializer> t) {
-        super(t);
-    }
-
-    @Override
-    public final void serialize(final ItemWithSerializer value, final JsonGenerator jgen, final SerializerProvider provider) throws IOException, JsonProcessingException {
-        jgen.writeStartObject();
-        jgen.writeNumberField("id", value.id);
-        jgen.writeStringField("itemName", value.itemName);
-        jgen.writeNumberField("owner", value.owner.id);
-        jgen.writeEndObject();
-    }
-
-}

jackson/src/test/java/com/baeldung/jackson/test/JacksonDeserializationUnitTest.java

@@ -1,118 +0,0 @@
-package com.baeldung.jackson.test;
-
-import static org.hamcrest.CoreMatchers.is;
-import static org.hamcrest.CoreMatchers.not;
-import static org.hamcrest.Matchers.equalTo;
-import static org.hamcrest.Matchers.notNullValue;
-import static org.junit.Assert.assertNotNull;
-import static org.junit.Assert.assertThat;
-
-import java.io.IOException;
-import java.time.ZoneId;
-import java.time.ZonedDateTime;
-
-import org.junit.Test;
-
-import com.baeldung.jackson.deserialization.ItemDeserializer;
-import com.baeldung.jackson.dtos.Item;
-import com.baeldung.jackson.dtos.ItemWithSerializer;
-import com.baeldung.jackson.dtos.MyDto;
-import com.fasterxml.jackson.core.JsonFactory;
-import com.fasterxml.jackson.core.JsonParseException;
-import com.fasterxml.jackson.core.JsonParser;
-import com.fasterxml.jackson.databind.DeserializationFeature;
-import com.fasterxml.jackson.databind.JsonMappingException;
-import com.fasterxml.jackson.databind.JsonNode;
-import com.fasterxml.jackson.databind.ObjectMapper;
-import com.fasterxml.jackson.databind.SerializationFeature;
-import com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException;
-import com.fasterxml.jackson.databind.module.SimpleModule;
-
-public class JacksonDeserializationUnitTest {
-
-    @Test
-    public final void whenDeserializingAJsonToAClass_thenCorrect() throws JsonParseException, JsonMappingException, IOException {
-        final String jsonAsString = "{\"stringValue\":\"a\",\"intValue\":1,\"booleanValue\":true}";
-        final ObjectMapper mapper = new ObjectMapper();
-
-        final MyDto readValue = mapper.readValue(jsonAsString, MyDto.class);
-
-        assertNotNull(readValue);
-        assertThat(readValue.getStringValue(), equalTo("a"));
-    }
-
-    @Test
-    public final void givenNotAllFieldsHaveValuesInJson_whenDeserializingAJsonToAClass_thenCorrect() throws JsonParseException, JsonMappingException, IOException {
-        final String jsonAsString = "{\"stringValue\":\"a\",\"booleanValue\":true}";
-        final ObjectMapper mapper = new ObjectMapper();
-
-        final MyDto readValue = mapper.readValue(jsonAsString, MyDto.class);
-
-        assertNotNull(readValue);
-        assertThat(readValue.getStringValue(), equalTo("a"));
-        assertThat(readValue.isBooleanValue(), equalTo(true));
-    }
-
-    // custom deserialization
-
-    @Test
-    public final void whenDeserializingTheStandardRepresentation_thenCorrect() throws JsonParseException, JsonMappingException, IOException {
-        final String json = "{\"id\":1,\"itemName\":\"theItem\",\"owner\":{\"id\":2,\"name\":\"theUser\"}}";
-
-        final Item readValue = new ObjectMapper().readValue(json, Item.class);
-        assertThat(readValue, notNullValue());
-    }
-
-    @Test
-    public final void whenDeserializingANonStandardRepresentation_thenCorrect() throws JsonParseException, JsonMappingException, IOException {
-        final String json = "{\"id\":1,\"itemName\":\"theItem\",\"createdBy\":2}";
-        final ObjectMapper mapper = new ObjectMapper();
-
-        final SimpleModule module = new SimpleModule();
-        module.addDeserializer(Item.class, new ItemDeserializer());
-        mapper.registerModule(module);
-
-        final Item readValue = mapper.readValue(json, Item.class);
-        assertThat(readValue, notNullValue());
-    }
-
-    @Test
-    public final void givenDeserializerIsOnClass_whenDeserializingCustomRepresentation_thenCorrect() throws JsonParseException, JsonMappingException, IOException {
-        final String json = "{\"id\":1,\"itemName\":\"theItem\",\"owner\":2}";
-
-        final ItemWithSerializer readValue = new ObjectMapper().readValue(json, ItemWithSerializer.class);
-        assertThat(readValue, notNullValue());
-    }
-
-    @Test
-    public void whenDeserialisingZonedDateTimeWithDefaults_thenTimeZoneIsNotPreserved() throws IOException {
-        ObjectMapper objectMapper = new ObjectMapper();
-        objectMapper.findAndRegisterModules();
-        objectMapper.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
-        // construct a new instance of ZonedDateTime
-        ZonedDateTime now = ZonedDateTime.now(ZoneId.of("Europe/Berlin"));
-        String converted = objectMapper.writeValueAsString(now);
-        // restore an instance of ZonedDateTime from String
-        ZonedDateTime restored = objectMapper.readValue(converted, ZonedDateTime.class);
-        System.out.println("serialized: " + now);
-        System.out.println("restored: " + restored);
-        assertThat(now, is(not(restored)));
-    }
-
-    @Test
-    public void whenDeserialisingZonedDateTimeWithFeaturesDisabled_thenTimeZoneIsPreserved() throws IOException {
-        ObjectMapper objectMapper = new ObjectMapper();
-        objectMapper.findAndRegisterModules();
-        objectMapper.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
-        objectMapper.disable(DeserializationFeature.ADJUST_DATES_TO_CONTEXT_TIME_ZONE);
-        // construct a new instance of ZonedDateTime
-        ZonedDateTime now = ZonedDateTime.now(ZoneId.of("Europe/Berlin"));
-        String converted = objectMapper.writeValueAsString(now);
-        // restore an instance of ZonedDateTime from String
-        ZonedDateTime restored = objectMapper.readValue(converted, ZonedDateTime.class);
-        System.out.println("serialized: " + now);
-        System.out.println("restored: " + restored);
-        assertThat(now, is(restored));
-    }
-
-}

jackson/src/test/java/com/baeldung/jackson/test/JacksonDynamicIgnoreUnitTest.java

@@ -1,100 +0,0 @@
-package com.baeldung.jackson.test;
-
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertTrue;
-
-import java.util.Arrays;
-
-import com.baeldung.jackson.dynamicIgnore.Address;
-import com.baeldung.jackson.dynamicIgnore.HidableSerializer;
-import com.baeldung.jackson.dynamicIgnore.Person;
-import com.baeldung.jackson.dynamicIgnore.Hidable;
-import org.junit.Before;
-import org.junit.Test;
-
-import com.fasterxml.jackson.annotation.JsonInclude.Include;
-import com.fasterxml.jackson.core.JsonProcessingException;
-import com.fasterxml.jackson.databind.BeanDescription;
-import com.fasterxml.jackson.databind.JsonSerializer;
-import com.fasterxml.jackson.databind.ObjectMapper;
-import com.fasterxml.jackson.databind.SerializationConfig;
-import com.fasterxml.jackson.databind.module.SimpleModule;
-import com.fasterxml.jackson.databind.ser.BeanSerializerModifier;
-
-public class JacksonDynamicIgnoreUnitTest {
-
-    private ObjectMapper mapper = new ObjectMapper();
-
-    @Before
-    public void setUp() {
-        mapper.setSerializationInclusion(Include.NON_EMPTY);
-        mapper.registerModule(new SimpleModule() {
-            @Override
-            public void setupModule(final SetupContext context) {
-                super.setupModule(context);
-                context.addBeanSerializerModifier(new BeanSerializerModifier() {
-                    @Override
-                    public JsonSerializer<?> modifySerializer(final SerializationConfig config, final BeanDescription beanDesc, final JsonSerializer<?> serializer) {
-                        if (Hidable.class.isAssignableFrom(beanDesc.getBeanClass())) {
-                            return new HidableSerializer((JsonSerializer<Object>) serializer);
-                        }
-                        return serializer;
-                    }
-                });
-            }
-        });
-    }
-
-    @Test
-    public void whenNotHidden_thenCorrect() throws JsonProcessingException {
-        final Address ad = new Address("ny", "usa", false);
-        final Person person = new Person("john", ad, false);
-        final String result = mapper.writeValueAsString(person);
-
-        assertTrue(result.contains("name"));
-        assertTrue(result.contains("john"));
-        assertTrue(result.contains("address"));
-        assertTrue(result.contains("usa"));
-
-        System.out.println("Not Hidden = " + result);
-    }
-
-    @Test
-    public void whenAddressHidden_thenCorrect() throws JsonProcessingException {
-        final Address ad = new Address("ny", "usa", true);
-        final Person person = new Person("john", ad, false);
-        final String result = mapper.writeValueAsString(person);
-
-        assertTrue(result.contains("name"));
-        assertTrue(result.contains("john"));
-        assertFalse(result.contains("address"));
-        assertFalse(result.contains("usa"));
-
-        System.out.println("Address Hidden = " + result);
-    }
-
-    @Test
-    public void whenAllHidden_thenCorrect() throws JsonProcessingException {
-        final Address ad = new Address("ny", "usa", false);
-        final Person person = new Person("john", ad, true);
-        final String result = mapper.writeValueAsString(person);
-
-        assertTrue(result.length() == 0);
-
-        System.out.println("All Hidden = " + result);
-    }
-
-    @Test
-    public void whenSerializeList_thenCorrect() throws JsonProcessingException {
-        final Address ad1 = new Address("tokyo", "jp", true);
-        final Address ad2 = new Address("london", "uk", false);
-        final Address ad3 = new Address("ny", "usa", false);
-        final Person p1 = new Person("john", ad1, false);
-        final Person p2 = new Person("tom", ad2, true);
-        final Person p3 = new Person("adam", ad3, false);
-
-        final String result = mapper.writeValueAsString(Arrays.asList(p1, p2, p3));
-
-        System.out.println(result);
-    }
-}

jackson/src/test/java/com/baeldung/jackson/test/JacksonJsonViewUnitTest.java

@@ -1,92 +0,0 @@
-package com.baeldung.jackson.test;
-
-import static org.hamcrest.Matchers.containsString;
-import static org.hamcrest.Matchers.not;
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertThat;
-
-import java.io.IOException;
-
-import org.junit.Test;
-
-import com.baeldung.jackson.jsonview.Item;
-import com.baeldung.jackson.jsonview.MyBeanSerializerModifier;
-import com.baeldung.jackson.jsonview.User;
-import com.baeldung.jackson.jsonview.Views;
-import com.fasterxml.jackson.core.JsonProcessingException;
-import com.fasterxml.jackson.databind.MapperFeature;
-import com.fasterxml.jackson.databind.ObjectMapper;
-import com.fasterxml.jackson.databind.ser.BeanSerializerFactory;
-import com.fasterxml.jackson.databind.ser.SerializerFactory;
-
-public class JacksonJsonViewUnitTest {
-
-    @Test
-    public void whenUseJsonViewToSerialize_thenCorrect() throws JsonProcessingException {
-        final User user = new User(1, "John");
-
-        final ObjectMapper mapper = new ObjectMapper();
-        mapper.disable(MapperFeature.DEFAULT_VIEW_INCLUSION);
-
-        final String result = mapper.writerWithView(Views.Public.class)
-            .writeValueAsString(user);
-
-        assertThat(result, containsString("John"));
-        assertThat(result, not(containsString("1")));
-    }
-
-    @Test
-    public void whenUsePublicView_thenOnlyPublicSerialized() throws JsonProcessingException {
-        final Item item = new Item(2, "book", "John");
-
-        final ObjectMapper mapper = new ObjectMapper();
-        final String result = mapper.writerWithView(Views.Public.class)
-            .writeValueAsString(item);
-
-        assertThat(result, containsString("book"));
-        assertThat(result, containsString("2"));
-
-        assertThat(result, not(containsString("John")));
-    }
-
-    @Test
-    public void whenUseInternalView_thenAllSerialized() throws JsonProcessingException {
-        final Item item = new Item(2, "book", "John");
-
-        final ObjectMapper mapper = new ObjectMapper();
-        final String result = mapper.writerWithView(Views.Internal.class)
-            .writeValueAsString(item);
-
-        assertThat(result, containsString("book"));
-        assertThat(result, containsString("2"));
-
-        assertThat(result, containsString("John"));
-    }
-
-    @Test
-    public void whenUseJsonViewToDeserialize_thenCorrect() throws IOException {
-        final String json = "{\"id\":1,\"name\":\"John\"}";
-
-        final ObjectMapper mapper = new ObjectMapper();
-
-        final User user = mapper.readerWithView(Views.Public.class)
-            .forType(User.class)
-            .readValue(json);
-        assertEquals(1, user.getId());
-        assertEquals("John", user.getName());
-    }
-
-    @Test
-    public void whenUseCustomJsonViewToSerialize_thenCorrect() throws JsonProcessingException {
-        final User user = new User(1, "John");
-        final SerializerFactory serializerFactory = BeanSerializerFactory.instance.withSerializerModifier(new MyBeanSerializerModifier());
-
-        final ObjectMapper mapper = new ObjectMapper();
-        mapper.setSerializerFactory(serializerFactory);
-
-        final String result = mapper.writerWithView(Views.Public.class)
-            .writeValueAsString(user);
-        assertThat(result, containsString("JOHN"));
-        assertThat(result, containsString("1"));
-    }
-}

jackson/src/test/java/com/baeldung/jackson/test/UnitTestSuite.java

@@ -7,9 +7,7 @@ import org.junit.runners.Suite;
 
 @RunWith(Suite.class)
 @Suite.SuiteClasses({ // @formatter:off
-     JacksonDeserializationUnitTest.class
-    ,JacksonDeserializationUnitTest.class
-    ,JacksonPrettyPrintUnitTest.class
+     JacksonPrettyPrintUnitTest.class
     ,SandboxUnitTest.class
 }) // @formatter:on
 public class UnitTestSuite {

jackson/src/test/java/com/baeldung/jackson/try1/JacksonDeserializationUnitTest.java

@@ -1,25 +0,0 @@
-package com.baeldung.jackson.try1;
-
-import static org.hamcrest.Matchers.notNullValue;
-import static org.junit.Assert.assertThat;
-
-import java.io.IOException;
-
-import com.baeldung.jackson.dtos.ItemWithSerializer;
-import org.junit.Test;
-
-import com.fasterxml.jackson.core.JsonParseException;
-import com.fasterxml.jackson.databind.JsonMappingException;
-import com.fasterxml.jackson.databind.ObjectMapper;
-
-public class JacksonDeserializationUnitTest {
-
-    @Test
-    public final void givenDeserializerIsOnClass_whenDeserializingCustomRepresentation_thenCorrect() throws JsonParseException, JsonMappingException, IOException {
-        final String json = "{\"id\":1,\"itemName\":\"theItem\",\"owner\":2}";
-
-        final ItemWithSerializer readValue = new ObjectMapper().readValue(json, ItemWithSerializer.class);
-        assertThat(readValue, notNullValue());
-    }
-
-}

jackson/src/test/resources/.gitignore

@@ -1,13 +0,0 @@
-*.class
-
-#folders#
-/target
-/neoDb*
-/data
-/src/main/webapp/WEB-INF/classes
-*/META-INF/*
-
-# Packaged files #
-*.jar
-*.war
-*.ear

jackson/src/test/resources/json_car.json

@@ -1,4 +0,0 @@
-{
-  "color": "Black",
-  "type": "BMW"
-}

jackson/src/test/resources/node_example.json

@@ -0,0 +1,18 @@
+{
+    "name": {
+        "first": "Tatu",
+        "last": "Saloranta"
+    },
+    "title": "Jackson founder",
+    "company": "FasterXML",
+    "pets": [
+        {
+            "type": "dog",
+            "number": 1
+        },
+        {
+            "type": "fish",
+            "number": 50
+        }
+    ]
+}