How to Deserialize JSON Arrays of Objects into Java Lists using Jackson?

Deserializing an Array of Objects with Jackson

Question:

How to deserializing arrays of objects into a Java list using Jackson?

Solution:

1. Create an Object Mapper:

import com.fasterxml.jackson.databind.ObjectMapper;
ObjectMapper mapper = new ObjectMapper();

2. Deserialize as an Array:

// JSON Input: [{...}, {...}, ...]
MyClass[] myObjects = mapper.readValue(json, MyClass[].class);

3. Deserialize as a List Using TypeReference:

List<MyClass> myObjects = mapper.readValue(jsonInput, new TypeReference<List<MyClass>>() {});

4. Deserialize as a List Using Type Factory:

List<MyClass> myObjects = mapper.readValue(jsonInput, mapper.getTypeFactory().constructCollectionType(List.class, MyClass.class));

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