Why does Gson fromJson throw a JsonSyntaxException: Expected BEGIN_OBJECT but was BEGIN_ARRAY?

Question

(This post is meant to be a canonical question with a sample answer provided below.)

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I\'m trying to deserialize some JSON content into a custom POJO type with

Answer 1

class Pojo {
  NestedPojo nestedPojo;
}

in your json you have an array of nestedPojo so either you change the code

  NestedPojo[] nestedPojo;

or you change the json string

String json = "{\"nestedPojo\":{\"name\":null, \"value\":42}}";