Java ObjectArrayDeserializer-class And Method Code Example

Here is an example of how to use the ObjectArrayDeserializer class from the Jackson Databind library to deserialize an object array from JSON:

import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.JavaType;
import com.fasterxml.jackson.databind.JsonDeserializer;
import com.fasterxml.jackson.databind.deser.std.ObjectArrayDeserializer;


public class CustomObjectArrayDeserializer extends ObjectArrayDeserializer {

    public CustomObjectArrayDeserializer(JavaType arrayType, JsonDeserializer<Object> deser) {
        super(arrayType, deser);

    public Object[] deserialize(JsonParser p, DeserializationContext ctxt) throws IOException {
        Object[] array = super.deserialize(p, ctxt);
        // Do some custom processing on the object array
        return array;

You can then use this custom deserializer by registering it with the ObjectMapper:

ObjectMapper mapper = new ObjectMapper();
SimpleModule module = new SimpleModule();
module.addDeserializer(MyClass[].class, new CustomObjectArrayDeserializer(mapper.getTypeFactory().constructArrayType(MyClass.class), mapper.findValueDeserializer(MyClass.class)));

Then you can deserialize your JSON to MyClass[] as follow:

MyClass[] myClassArray = mapper.readValue(jsonString, MyClass[].class);

Please note that the above example is just a skeleton code, you may need to handle the exception and add proper validation based on your use case.

You can also use the ObjectArrayDeserializer class directly to deserialize the json to object array without creating the custom deserializer.

MyClass[] myClassArray = mapper.readValue(jsonString, MyClass[].class);

This will directly parse the json and give you the object array representation of the json.