Android/java if else statement in puplic class

I try to modify my app to read from a MySQL-DB the content with loacalized language as a separate column.

The easist way (dirty workaround) I image, is to change the statement @SerializedName("name") to @SerializedName("name_de") with an if-else.

if(Locale.getDefault().getDisplayName().equals("de")){
    @SerializedName("name_de")
}else
{
    @SerializedName("name")
}

But where and how to put it in the code?

import android.content.res.Resources;
import android.os.Build;
import android.util.Log;
import java.util.*;

import com.google.gson.annotations.SerializedName;
import com.xxxxxxx.storefinder.R;

import java.util.Locale;

public class Category {


    public Category(int id, String name) {
        this.id = id;
        this.name = name;
       }

   // @SerializedName("name_de")
   // public String name ="";

    @SerializedName("name")
    public String name = "";

    @SerializedName("id")
    public int id;
}```




Sorry for this noob question.
I just don't understand the underlying concept and just need to localize this app, the easy way

kr

Daniel