Handling multiple attribute of same name via GSON

Handling multiple attribute of same name via GSON

By : user2948899
Date : November 15 2020, 06:54 AM
This might help you Annotate the fields you want to expose with @Expose and create your Gson instance with the builder, setting the appropriate configuration
code :
public class ABC {    
    String imageUrl

    XYZ image;
Gson gson = new GsonBuilder().excludeFieldsWithoutExposeAnnotation().create();

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Gson custom error handling

Gson custom error handling

By : Justin Jewett
Date : March 29 2020, 07:55 AM
To fix this issue I'm trying to use the Gson library to parse some json data. The response from the server could be either of these: , @Brian. I ended up just parsing like this
code :
JsonParser parser = new JsonParser();
Gson gson = new GsonBuilder().create();
    ArrayList<GridItemVo> list = gson.fromJson(value, new TypeToken<ArrayList<GridItemVo>>(){}.getType());
JAVA,GSON :- add multiple data in json object using GSON

JAVA,GSON :- add multiple data in json object using GSON

By : 손재현
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further Creating JSONObjects and JSONArrays by hand can be really messy, here I show you how to create and show as json your data structure by using Gson library:
code :
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
class Stats
    private String metric;
    private long timestamp;
    private int value;
    private Map<String,String> tags=new HashMap<>();
     * @return the metric
    public String getMetric() {
        return metric;
     * @param metric the metric to set
    public void setMetric(String metric) {
        this.metric = metric;
     * @return the timestamp
    public long getTimestamp() {
        return timestamp;
     * @param timestamp the timestamp to set
    public void setTimestamp(long timestamp) {
        this.timestamp = timestamp;
     * @return the value
    public int getValue() {
        return value;
     * @param value the value to set
    public void setValue(int value) {
        this.value = value;
     * @return the tags
    public Map<String, String> getTags() {
        return tags;
     * @param tags the tags to set
    public void setTags(Map<String, String> tags) {
        this.tags = tags;

public class JSON {

    public static final void main(String args[])
        List<Stats> stats=new ArrayList<Stats>();
        // Fill data, you know, whatever
        Stats stat1=new Stats();

        Stats stat2=new Stats();
        // ... Fill data...

        // ... Add stats to array

        Gson gson=new GsonBuilder().setPrettyPrinting().create();
    "metric": "metric1",
    "timestamp": 0,
    "value": 0,
    "tags": {
      "tag2": "value2",
      "tag1": "value1"
    "metric": "metric2",
    "timestamp": 0,
    "value": 0,
    "tags": {}
Gson: handling an optional List

Gson: handling an optional List

By : amir hossein
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further I don't know what is the structure of a class that you are using to deserialize this JSON, but I'd like to sugest that there is a class like this
code :
public class Rule {

    private String id;
    private String field;
    private String type;
    private String input;
    private String operator;
    private List<String> value;

    // constructors, getters and setters
public class CustomSerializer implements JsonDeserializer<Rule> {
    public Rule deserialize(JsonElement jsonElement, Type type,
                             JsonDeserializationContext jsonDeserializationContext) throws JsonParseException {

        JsonObject obj = (JsonObject) jsonElement;
        JsonElement value = obj.get("value");
        List<String> values = new ArrayList();
        if (value.isJsonArray()) {

            for (JsonElement jsonElement1 : value.getAsJsonArray()) {
                String str = jsonElement1.getAsString();
        } else {
        // deserialize other properties

        Rule rule = new Rule();
        // set other properties
        return rule;
Gson gson = new GsonBuilder()
        .registerTypeAdapter(Rule.class, new CustomSerializer ())
  "id": "date",
  "field": "date",
  "type": "date",
  "input": "text",
  "operator": "equal",
  "value": "01.01.2016"
What is the role of 'com.google.code.gson:gson:2.6.1' dependency in retrofit 2 when it has its own gson converter?

What is the role of 'com.google.code.gson:gson:2.6.1' dependency in retrofit 2 when it has its own gson converter?

By : Manish Pandey
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further At the source of Retrofit Gson contverter library, there is a dependency of Gson.
code :
Retrofit - Android - Handling multiple type keys and values with gson

Retrofit - Android - Handling multiple type keys and values with gson

By : user2167936
Date : March 29 2020, 07:55 AM
it helps some times it has been a while but still i already came to a conclusion of what i need.
code :
data class OHLCResponse(
private val error: List<String>,
val result: LinkedTreeMap<String, Any>)
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