using StdSerializer

jackson/src/test/java/com/baeldung/jackson/bidirection/CustomListSerializer.java

@@ -6,11 +6,20 @@ import java.util.List;
 
 import com.fasterxml.jackson.core.JsonGenerator;
 import com.fasterxml.jackson.core.JsonProcessingException;
-import com.fasterxml.jackson.databind.JsonSerializer;
 import com.fasterxml.jackson.databind.SerializerProvider;
+import com.fasterxml.jackson.databind.ser.std.StdSerializer;
 
-public class CustomListSerializer extends JsonSerializer<List<ItemWithSerializer>> {
+public class CustomListSerializer extends StdSerializer<List<ItemWithSerializer>> {
 
+    private static final long serialVersionUID = 3698763098000900856L;
+
+    public CustomListSerializer() {
+        this(null);
+    }
+
+    public CustomListSerializer(final Class<List<ItemWithSerializer>> t) {
+        super(t);
+    }
     @Override
     public void serialize(final List<ItemWithSerializer> items, final JsonGenerator generator, final SerializerProvider provider) throws IOException, JsonProcessingException {
         final List<Integer> ids = new ArrayList<Integer>();

jackson/src/test/java/com/baeldung/jackson/date/CustomDateSerializer.java

@@ -6,13 +6,22 @@ import java.util.Date;
 
 import com.fasterxml.jackson.core.JsonGenerator;
 import com.fasterxml.jackson.core.JsonProcessingException;
-import com.fasterxml.jackson.databind.JsonSerializer;
 import com.fasterxml.jackson.databind.SerializerProvider;
+import com.fasterxml.jackson.databind.ser.std.StdSerializer;
 
-public class CustomDateSerializer extends JsonSerializer<Date> {
+public class CustomDateSerializer extends StdSerializer<Date> {
 
+    private static final long serialVersionUID = -2894356342227378312L;
     private SimpleDateFormat formatter = new SimpleDateFormat("dd-MM-yyyy hh:mm:ss");
 
+    public CustomDateSerializer() {
+        this(null);
+    }
+
+    public CustomDateSerializer(final Class<Date> t) {
+        super(t);
+    }
+
     @Override
     public void serialize(final Date value, final JsonGenerator gen, final SerializerProvider arg2) throws IOException, JsonProcessingException {
         gen.writeString(formatter.format(value));

jackson/src/test/java/com/baeldung/jackson/date/CustomDateTimeSerializer.java

@@ -8,10 +8,20 @@ import org.joda.time.format.DateTimeFormatter;
 
 import com.fasterxml.jackson.core.JsonGenerator;
 import com.fasterxml.jackson.core.JsonProcessingException;
-import com.fasterxml.jackson.databind.JsonSerializer;
 import com.fasterxml.jackson.databind.SerializerProvider;
+import com.fasterxml.jackson.databind.ser.std.StdSerializer;
 
-public class CustomDateTimeSerializer extends JsonSerializer<DateTime> {
+public class CustomDateTimeSerializer extends StdSerializer<DateTime> {
+
+    private static final long serialVersionUID = -3927232057990121460L;
+
+    public CustomDateTimeSerializer() {
+        this(null);
+    }
+
+    public CustomDateTimeSerializer(final Class<DateTime> t) {
+        super(t);
+    }
 
     private static DateTimeFormatter formatter = DateTimeFormat.forPattern("yyyy-MM-dd HH:mm");
 

jackson/src/test/java/com/baeldung/jackson/date/CustomLocalDateTimeSerializer.java

@@ -6,13 +6,23 @@ import java.time.format.DateTimeFormatter;
 
 import com.fasterxml.jackson.core.JsonGenerator;
 import com.fasterxml.jackson.core.JsonProcessingException;
-import com.fasterxml.jackson.databind.JsonSerializer;
 import com.fasterxml.jackson.databind.SerializerProvider;
+import com.fasterxml.jackson.databind.ser.std.StdSerializer;
 
-public class CustomLocalDateTimeSerializer extends JsonSerializer<LocalDateTime> {
+public class CustomLocalDateTimeSerializer extends StdSerializer<LocalDateTime> {
 
+
+    private static final long serialVersionUID = -7449444168934819290L;
     private static DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm");
 
+    public CustomLocalDateTimeSerializer() {
+        this(null);
+    }
+
+    public CustomLocalDateTimeSerializer(final Class<LocalDateTime> t) {
+        super(t);
+    }
+
     @Override
     public void serialize(final LocalDateTime value, final JsonGenerator gen, final SerializerProvider arg2) throws IOException, JsonProcessingException {
         gen.writeString(formatter.format(value));

jackson/src/test/java/com/baeldung/jackson/dtos/withEnum/TypeSerializer.java

@@ -4,10 +4,20 @@ 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;
+import com.fasterxml.jackson.databind.ser.std.StdSerializer;
 
-public class TypeSerializer extends JsonSerializer<TypeEnumWithCustomSerializer> {
+public class TypeSerializer extends StdSerializer<TypeEnumWithCustomSerializer> {
+
+    private static final long serialVersionUID = -7650668914169390772L;
+
+    public TypeSerializer() {
+        this(null);
+    }
+
+    public TypeSerializer(final Class<TypeEnumWithCustomSerializer> t) {
+        super(t);
+    }
 
     @Override
     public void serialize(final TypeEnumWithCustomSerializer value, final JsonGenerator generator, final SerializerProvider provider) throws IOException, JsonProcessingException {

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

@@ -3,13 +3,22 @@ package com.baeldung.jackson.serialization;
 import java.io.IOException;
 
 import com.baeldung.jackson.dtos.Item;
-
 import com.fasterxml.jackson.core.JsonGenerator;
 import com.fasterxml.jackson.core.JsonProcessingException;
-import com.fasterxml.jackson.databind.JsonSerializer;
 import com.fasterxml.jackson.databind.SerializerProvider;
+import com.fasterxml.jackson.databind.ser.std.StdSerializer;
 
-public class ItemSerializer extends JsonSerializer<Item> {
+public class ItemSerializer extends StdSerializer<Item> {
+
+    private static final long serialVersionUID = 6739170890621978901L;
+
+    public ItemSerializer() {
+        this(null);
+    }
+
+    public ItemSerializer(final Class<Item> t) {
+        super(t);
+    }
 
     @Override
     public final void serialize(final Item value, final JsonGenerator jgen, final SerializerProvider provider) throws IOException, JsonProcessingException {

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

@@ -3,13 +3,22 @@ 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.JsonSerializer;
 import com.fasterxml.jackson.databind.SerializerProvider;
+import com.fasterxml.jackson.databind.ser.std.StdSerializer;
 
-public class ItemSerializerOnClass extends JsonSerializer<ItemWithSerializer> {
+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 {

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

@@ -4,10 +4,20 @@ 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;
+import com.fasterxml.jackson.databind.ser.std.StdSerializer;
 
-public class MyDtoNullKeySerializer extends JsonSerializer<Object> {
+public class MyDtoNullKeySerializer extends StdSerializer<Object> {
+
+    private static final long serialVersionUID = -4478531309177369056L;
+
+    public MyDtoNullKeySerializer() {
+        this(null);
+    }
+
+    public MyDtoNullKeySerializer(final Class<Object> t) {
+        super(t);
+    }
 
     @Override
     public void serialize(final Object value, final JsonGenerator jgen, final SerializerProvider provider) throws IOException, JsonProcessingException {