@SerializedName not reflecting with Child class

Question

import com.google.gson.annotations.SerializedName

class Parent {
    @SerializedName("home_town")
    private String homeTown;
    // getters & setters
}

class Child extends Parent {
}

when we check/print/log the child object it has something like:

{"homeTown":"blahblah"}

whereas our expectation is:

{"home_town":"blahblah"}

Now if we override the getter method of Parent class in Child class and annotate using @JsonProperty("home_town"), then it works

import com.fasterxml.jackson.annotation.JsonProperty

class Child extends Parent {
  @Override
  @JsonProperty("home_town")
  public String getHomeTown(){
    return super.getHomeTown();
  }
}

I had been expecting @SerializedName should have worked with Child class too in the first place through inheritance, I am little puzzled that why it worked only by overriding the getter method and annotating with @JsonProperty

Appreciate your help!

Answer 1

I've resolved it by using @JsonProperty on all getters in parent class like follows:

class Parent {
    @SerializedName("home_town")
    private String homeTown;
    // getters & setters

    @JsonProperty("home_town")
    public String getHomeTown(){
        return homeTown;
    }
}

class Child extends Parent {

}

This is how I've achieved my objective, this way I do not need to touch the Child class.