First, create a class that represents a single json object, e.g.:

class MyObject {
    private String image;

    public MyObject(String name) { image = name; }
}

Gson will use the class' variable names to determine what property names to use.

Then create an array or list of these using the data you have available, e.g.

ArrayList<MyObject> allItems = new ArrayList<>();
allItems.add(new MyObject("name1"));
allItems.add(new MyObject("name2"));
allItems.add(new MyObject("name3"));

Finally, to serialize to Json, do:

String json = new Gson().toJson(allItems);

And to get the data back from json to an array:

MyObject[] items = new Gson().fromJson(json, MyObject[].class);

For simple (de)serialization, there is no need to be dealing directly with Json classes.

You can parse the JSONArray directly, don't need to wrap your Post class with PostEntity one more time and don't need new JSONObject().toString() either:

Gson gson = new Gson();
String jsonOutput = "Your JSON String";
Type listType = new TypeToken<List<Post>>(){}.getType();
List<Post> posts = gson.fromJson(jsonOutput, listType);

the class:

public class JsonStructure{
    public String[] message;
    public String[] asec;
}

using it:

JsonStructure json = new JsonStructure();
json.message = new String[]{"msg 1", "msg 2", "msg 3"};
json.asec = new String[]{"asec 1", "asec 2", "asec 3"};
Gson gson = new Gson();
String output = gson.toJson(json);
//convert from string
JsonStructure fromString = gson.fromJson(output, JsonStructure.class);

For more details on Google's gson please take a look at https://sites.google.com/site/gson/gson-user-guide

Now that we can see the data, we can see that payments is in fact an array (values uses []).

That means you need to call rootObj.getAsJsonArray("payments") which returns a JsonArray, and it is an Iterable<JsonElement>, which means your loop should be for(JsonElement pa : paymentsObject).

Remember, each value of the array can be any type of Json element (object, array, string, number, ...).

You know that they are JsonObject, so you can call getAsJsonObject() on them.

json = (json data)
JsonParser parser = new JsonParser();
JsonObject rootObj = parser.parse(json).getAsJsonObject();
JsonArray paymentsArray = rootObj.getAsJsonArray("payments");
for (JsonElement pa : paymentsArray) {
    JsonObject paymentObj = pa.getAsJsonObject();
    String     quoteid     = paymentObj.get("quoteid").getAsString();
    String     dateEntered = paymentObj.get("date_entered").getAsString();
    BigDecimal amount      = paymentObj.get("amount").getAsBigDecimal();
}

You can create a primitive that will contain the String value and add it to the array:

JsonArray jArray = new JsonArray();
JsonPrimitive element = new JsonPrimitive("value1");
jArray.add(element);

You can get values using:

JsonObject propertiesJson = properties.get(0);
String value = propertiesJson.getString("value");

hi if your json looks like this

{"status": "success",
"data": [
  {
    "trip_id": "5",
    "ride_id": "5",
    "start_location": "8 Rd No 14, Dhaka 1209, Bangladesh",
    "end_location": "Uttara Dhaka, Dhaka Division, Bangladesh",
    "date": "2017-03-14 17:36 PM",
    "time_from": "1489491394079.5322 ",
    "time_to": "1489493194079.5322 ",
    "status": 5,
    "trip_earn": "",
    "currency": "CAD"

  },
{
        "trip_id": "5",
        "ride_id": "5",
        "start_location": "8 Rd No 14, Dhaka 1209, Bangladesh",
        "end_location": "Uttara Dhaka, Dhaka Division, Bangladesh",
        "date": "2017-03-14 17:36 PM",
        "time_from": "1489491394079.5322 ",
        "time_to": "1489493194079.5322 ",
        "status": 5,
        "trip_earn": "",
        "currency": "CAD"

      }
]
}

then your write a class like that for parsign the data

public class Example {

@SerializedName("status")
@Expose
private String status;
@SerializedName("data")
@Expose
private List<Datum> data = null;

public String getStatus() {
return status;
}

public void setStatus(String status) {
this.status = status;
}

public List<Datum> getData() {
return data;
}

public void setData(List<Datum> data) {
this.data = data;
}

}

and

public class Datum {

@SerializedName("trip_id")
@Expose
private String tripId;
@SerializedName("ride_id")
@Expose
private String rideId;
@SerializedName("start_location")
@Expose
private String startLocation;
@SerializedName("end_location")
@Expose
private String endLocation;
@SerializedName("date")
@Expose
private String date;
@SerializedName("time_from")
@Expose
private String timeFrom;
@SerializedName("time_to")
@Expose
private String timeTo;
@SerializedName("status")
@Expose
private Integer status;
@SerializedName("trip_earn")
@Expose
private String tripEarn;
@SerializedName("currency")
@Expose
private String currency;

public String getTripId() {
return tripId;
}

public void setTripId(String tripId) {
this.tripId = tripId;
}

public String getRideId() {
return rideId;
}

public void setRideId(String rideId) {
this.rideId = rideId;
}

public String getStartLocation() {
return startLocation;
}

public void setStartLocation(String startLocation) {
this.startLocation = startLocation;
}

public String getEndLocation() {
return endLocation;
}

public void setEndLocation(String endLocation) {
this.endLocation = endLocation;
}

public String getDate() {
return date;
}

public void setDate(String date) {
this.date = date;
}

public String getTimeFrom() {
return timeFrom;
}

public void setTimeFrom(String timeFrom) {
this.timeFrom = timeFrom;
}

public String getTimeTo() {
return timeTo;
}

public void setTimeTo(String timeTo) {
this.timeTo = timeTo;
}

public Integer getStatus() {
return status;
}

public void setStatus(Integer status) {
this.status = status;
}

public String getTripEarn() {
return tripEarn;
}

public void setTripEarn(String tripEarn) {
this.tripEarn = tripEarn;
}

public String getCurrency() {
return currency;
}

public void setCurrency(String currency) {
this.currency = currency;
}

}

use like

Gson gson = new Gson();
String jsonInString = "{\"userId\":\"1\",\"userName\":\"chayon\"}";
Example user= gson.fromJson(jsonInString, Example.class);
user.getdata().get(position)