I have Json response as
"Test1": { "Test2": [ [ 0, "US TV", [] ] ] } I have created a Test2 class like
@JsonProperty("Test2") @JsonFormat(with = JsonFormat.Feature.ACCEPT_SINGLE_VALUE_AS_ARRAY) Test2[] arrayObjects; And not sure how to give [] in Test2 class, can anyone suggest how to create Pojo for the mentioned Json response in Java?
Declare the field like this:
@JsonProperty("Test2") Object[][] test2; or like this:
@JsonProperty("Test2") List<List<Object>> test2; The type is Object since the inner array contains a mix of number, string, and array.
The name of the field doesn't matter, since you have @JsonProperty naming it for the JSON.
You can of course also do List<Object[]> or List<Object>[], but those seem a bit weird.
UPDATE: Proof that above code works:
Foo.java
@JsonRootName("Test1") class Foo { @JsonProperty("Test2") List<List<Object>> bar; public static void main(String[] args) throws Exception { Foo foo = new ObjectMapper() .configure(DeserializationFeature.UNWRAP_ROOT_VALUE, true) .readValue(new File("test.json"), Foo.class); System.out.println(foo.bar); } } test.json
{ "Test1": { "Test2": [ [ 0, "US TV", [] ] ] } } Output
[[0, US TV, []]] 