com.google.gson.internal.LinkedTreeMap cannot be cast to my class [duplicate]

Answer 1

{"root": 
 [
  {"mBarcode":"123","mName":"Apfel","mPrice":"2.7"},
  {"mBarcode":"456","mName":"Pfirsich","mPrice":"1.1111"},
  {"mBarcode":"89325982","mName":"Birne","mPrice":"1.5555"}
 ]
} 


JsonObject root = g.fromJson(json, JsonObject.class);
//read root element which contains list
JsonElement e = root.get("root");
//as the element is array convert it 
JsonArray ja  = e.getAsJsonArray();

for(JsonElement j : ja){
   //here use the json to parse into your custom object 
}