Develop Reference

Getting null from POJO after using JACKSON ObjectMapper

I'm struggling whit this problem for a while and can't find a solution.
My intention is to retrieve a POJO from the following JSON using Jackson:
{
"date": "2018-11-27",
"rates": {
"BGN": 1.9558,
"CAD": 1.5018,
"BRL": 4.4011,
"HUF": 324.06,
"DKK": 7.4617,
"JPY": 128.66,
"ILS": 4.2215,
"TRY": 5.9313,
"RON": 4.6583,
"GBP": 0.88748,
"PHP": 59.439,
"HRK": 7.4275,
"NOK": 9.7325,
"USD": 1.1328,
"MXN": 23.1784,
"AUD": 1.5631,
"IDR": 16410.59,
"KRW": 1279.17,
"HKD": 8.8679,
"ZAR": 15.632,
"ISK": 141,
"CZK": 25.914,
"THB": 37.371,
"MYR": 4.7498,
"NZD": 1.6647,
"PLN": 4.2902,
"SEK": 10.2823,
"RUB": 75.6401,
"CNY": 7.8708,
"SGD": 1.5582,
"CHF": 1.1309,
"INR": 80.162
},
"base": "EUR"
}
I solved it with the following code:
public class JsonToPojo {
private static final String URL_LATEST = "https://api.exchangeratesapi.io/latest";
public static String getJson() {
try {
URL url = new URL(URL_LATEST);
HttpURLConnection urlConnection = (HttpURLConnection)url.openConnection();
urlConnection.setRequestMethod("GET");
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(urlConnection.getInputStream()));
String inputLine;
StringBuffer response = new StringBuffer();
while ((inputLine = bufferedReader.readLine()) != null) {
System.out.println(inputLine);
response.append(inputLine);
}
bufferedReader.close();
urlConnection.disconnect();
return response.toString();
} catch (IOException e) {
e.getStackTrace();
return null;
}
}
}
This is my POJO:
public class Currency {
private String date;
private Rates rates;
private String base;
public String getBase() {
return base;
}
public void setBase(String base) {
this.base = base;
}
public String getDate() {
return date;
}
public void setDate(String date) {
this.date = date;
}
public Rates getRates() {
return rates;
}
public void setRates(Rates rates) {
this.rates = rates;
}
}
Class using ObjectMapper:
public class CurrencyService {
public static Currency getLatestCurrency(){
try {
ObjectMapper mapper = new ObjectMapper();
Currency currency = mapper.readValue(JsonToPojo.getJson(), Currency.class);
return currency;
}catch (IOException e){
e.getStackTrace();
return null;
}
}
}
When I'm trying to call the get method on my POJO object, I'm getting a NullPointException, so something is wrong with databinding.
my Rates class.
public class Rates {
private float BGN;
private float CAD;
private float BRL;
private float HUF;
private float DKK;
private float JPY;
private float ILS;
private float TRY;
private float RON;
private float GBP;
private float PHP;
private float HRK;
private float NOK;
private float ZAR;
private float MXD;
private float AUD;
private float USD;
private float KRW;
private float HKD;
private float EUR;
private float ISK;
private float CZK;
private float THB;
private float MYR;
private float NZD;
private float PLN;
private float CHF;
private float SEK;
private float CNY;
private float SGD;
private float INR;
private float IDR;
private float RUB;
public void setBGN(Float BGN) {
this.BGN = BGN;
}
public void setCAD(Float CAD) {
this.CAD = CAD;
}
public void setBRL(Float BRL) {
this.BRL = BRL;
}
public void setHUF(Float HUF) {
this.HUF = HUF;
}
public void setDKK(Float DKK) {
this.DKK = DKK;
}
public void setJPY(Float JPY) {
this.JPY = JPY;
}
public void setILS(Float ILS) {
this.ILS = ILS;
}
public void setTRY(Float TRY) {
this.TRY = TRY;
}
public void setRON(Float RON) {
this.RON = RON;
}
public void setGBP(Float GBP) {
this.GBP = GBP;
}
public void setPHP(Float PHP) {
this.PHP = PHP;
}
public void setHRK(Float HRK) {
this.HRK = HRK;
}
public void setNOK(Float NOK) {
this.NOK = NOK;
}
public void setZAR(Float ZAR) {
this.ZAR = ZAR;
}
public void setMXD(Float MXD) {
this.MXD = MXD;
}
public void setAUD(Float AUD) {
this.AUD = AUD;
}
public void setUSD(Float USD) {
this.USD = USD;
}
public void setKRW(Float KRW) {
this.KRW = KRW;
}
public void setHKD(Float HKD) {
this.HKD = HKD;
}
public void setEUR(Float EUR) {
this.EUR = EUR;
}
public void setISK(Float ISK) {
this.ISK = ISK;
}
public void setCZK(Float CZK) {
this.CZK = CZK;
}
public void setTHB(Float THB) {
this.THB = THB;
}
public void setMYR(Float MYR) {
this.MYR = MYR;
}
public void setNZD(Float NZD) {
this.NZD = NZD;
}
public void setPLN(Float PLN) {
this.PLN = PLN;
}
public void setCHF(Float CHF) {
this.CHF = CHF;
}
public void setSEK(Float SEK) {
this.SEK = SEK;
}
public void setCNY(Float CNY) {
this.CNY = CNY;
}
public void setSGD(Float SGD) {
this.SGD = SGD;
}
public void setINR(Float INR) {
this.INR = INR;
}
public void setIDR(Float IDR) {
this.IDR = IDR;
}
public void setRUB(Float RUB) {
this.RUB = RUB;
}
public Float getBGN() {
return BGN;
}
public Float getCAD() {
return CAD;
}
public Float getBRL() {
return BRL;
}
public Float getHUF() {
return HUF;
}
public Float getDKK() {
return DKK;
}
public Float getJPY() {
return JPY;
}
public Float getILS() {
return ILS;
}
public Float getTRY() {
return TRY;
}
public Float getRON() {
return RON;
}
public Float getGBP() {
return GBP;
}
public Float getPHP() {
return PHP;
}
public Float getHRK() {
return HRK;
}
public Float getNOK() {
return NOK;
}
public Float getZAR() {
return ZAR;
}
public Float getMXD() {
return MXD;
}
public Float getAUD() {
return AUD;
}
public Float getUSD() {
return USD;
}
public Float getKRW() {
return KRW;
}
public Float getHKD() {
return HKD;
}
public Float getEUR() {
return EUR;
}
public Float getISK() {
return ISK;
}
public Float getCZK() {
return CZK;
}
public Float getTHB() {
return THB;
}
public Float getMYR() {
return MYR;
}
public Float getNZD() {
return NZD;
}
public Float getPLN() {
return PLN;
}
public Float getCHF() {
return CHF;
}
public Float getSEK() {
return SEK;
}
public Float getCNY() {
return CNY;
}
public Float getSGD() {
return SGD;
}
public Float getINR() {
return INR;
}
public Float getIDR() {
return IDR;
}
public Float getRUB() {
return RUB;
}
}

I've checked your code locally, and have got it working. I didn't have a Rates class, so I used a Map instead (to map the name, with the rate (float)):
import java.util.Map;
public class Currency {
private String date;
private Map<String, Float> rates;
private String base;
public String getBase() {
return base;
}
public void setBase(String base) {
this.base = base;
}
public String getDate() {
return date;
}
public void setDate(String date) {
this.date = date;
}
public Map<String, Float> getRates() {
return rates;
}
public Float getSingleRate(String rateKey) {
if (rates.containsKey(rateKey)) {
return rates.get(rateKey);
}
return 0.0F;
}
public void setRates(Map<String, Float> rates) {
this.rates = rates;
}
}
I have added the following main() method to your JSonToPojo class:
public static void main(String[] args) {
ObjectMapper mapper = new ObjectMapper();
Currency currency = new Currency();
String jsonStr = getJson();
try {
currency = mapper.readValue(jsonStr, Currency.class);
} catch (IOException e) {
e.printStackTrace();
}
System.out.println(jsonStr);
System.out.println(currency.getSingleRate("BGN"));
System.out.println("finished");
}
Running the main() method, produces the following output (I have used [snip] instead of printing out all the JSon (twice)):
{"date":"2018-11-27","rates": {"BGN":1.9558, [snip] }
{"date":"2018-11-27","rates": {"BGN":1.9558, [snip] }
1.9558
finished
The output for "BGN" is:
1.9558

You can refer to http://www.jsonschema2pojo.org/ to get the correct pojo for your json.
Below is the one I created (moderatley modified)
You can replace like Object date with Date date and so on. If it doesn't work than there is probably some error in your POJO
import com.fasterxml.jackson.annotation.JsonProperty;
import java.util.HashMap;
import java.util.Map;
import com.fasterxml.jackson.annotation.JsonAnyGetter;
import com.fasterxml.jackson.annotation.JsonAnySetter;
import com.fasterxml.jackson.annotation.JsonIgnore;
public class Example {
#JsonProperty("date")
private Object date;
#JsonProperty("rates")
private Object rates;
#JsonProperty("base")
private Object base;
#JsonIgnore
private Map<String, Object> additionalProperties = new HashMap<String, Object>();
#JsonProperty("date")
public Object getDate() {
return date;
}
#JsonProperty("date")
public void setDate(Object date) {
this.date = date;
}
#JsonProperty("rates")
public Object getRates() {
return rates;
}
#JsonProperty("rates")
public void setRates(Object rates) {
this.rates = rates;
}
#JsonProperty("base")
public Object getBase() {
return base;
}
#JsonProperty("base")
public void setBase(Object base) {
this.base = base;
}
#JsonAnyGetter
public Map<String, Object> getAdditionalProperties() {
return this.additionalProperties;
}
#JsonAnySetter
public void setAdditionalProperty(String name, Object value) {
this.additionalProperties.put(name, value);
}
#Override
public String toString() {
return "date:" + date.toString() +
",\nrates:" + rates.toString() +
",\nbase: " + base.toString();
}
}
And here is the driver class in which you can read the object and pass in the user defined file path ( i have set it to "test-json.json"). You can update this with your local file path address.
import com.fasterxml.jackson.databind.ObjectMapper;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.stream.Collectors;
import java.util.stream.Stream;
public class Main {
public static void main(String... args){
Main main = new Main();
Example example = main.readObjectDataFromJsonFile(Example.class,"test-json.json");
System.out.println(example);
}
public <T> T readObjectDataFromJsonFile(Class<T> clazz, String jsonFilePath) {
T populatedObject = null;
try {
ObjectMapper objectMapper = new ObjectMapper();
String objectJson = "";
Stream<String> lines = Files.lines(Paths.get(jsonFilePath));
objectJson = lines.collect(Collectors.joining());
lines.close();
populatedObject = objectMapper.readValue(objectJson, clazz);
} catch (IOException ioException) {
System.out.println("Exception in reading json file");
System.out.println(ioException.getMessage());
}
return populatedObject;
}
}

you can use
mapper.configure(MapperFeature.ACCEPT_CASE_INSENSITIVE_PROPERTIES, true);
without any change to your Pojos, but I had to add MXN as a property to Rates class. But ideal way to handle this is having a Map for the rates. Because it can change any time as I understood, either way its easier for access. So change Currency class as follows.
public class Currency {
private String date;
private Map<String, Float> rates;
private String base;
// getters and setters
}
access exchange rates as getRates().get('MXN') // returns value.

Receive big json message via GsonRequest

Here is the intentservice where I get error in logout
public class intentService extends IntentService {
#Override
protected void onHandleIntent(Intent intent) {
RequestQueue queue = MyVolley.getRequestQueue(this);
queue = MyVolley.getRequestQueue(this);
GsonRequest<Routes> gsonRequest = new GsonRequest<Routes>(
url_routes + key, Routes.class, null, createMyReqSuccessListenerRoutes(key),
createMyReqErrorListenerRoutes());
queue.add(gsonRequest);
Function for receive in intentservice
private Response.Listener<Routes> createMyReqSuccessListenerRoutes(final int key) {
return new Response.Listener<Routes>() {
#SuppressLint("LongLogTag")
#Override
public void onResponse(Routes response) {
if (ds.checkTable(DataBaseHelper.TABLE_NAME_TRANSPORT)) {
ds.createTableRoute();
final int size = response.getResults().size();
if (size > 0) {
final int part = 100 / size;
int i;
for (i = 0; i < size; i++) {
ds.insertRoutes(DataBaseHelper.TABLE_NAME_ROUTE,
response.getResults().get(i).getRoute(),
response.getResults().get(i).getStop_id(),
response.getResults().get(i).getNum(),
response.getResults().get(i).getLat(),
response.getResults().get(i).getLon(),
response.getResults().get(i).getRadius(),
response.getResults().get(i).getAudio(),
response.getResults().get(i).getEnd(),
response.getResults().get(i).getMove_time(),
response.getResults().get(i).getStop_time(),
response.getResults().get(i).getPlayonce(),
response.getResults().get(i).getName(),
key
);
}
}
}
}
}
}
Call it from another activity
serviceintentRoute = new Intent(DataBase.this, intentService.class);
startService(serviceintentRoute.putExtra("key", idp));
My RouteData class
public class RoutesData {
private Integer route;
private Integer stop_id;
private Integer num;
private String name;
private String lat;
private String lon;
private Integer radius;
private String audio;
private Integer stop_time;
private Integer move_time;
private Integer end;
private Integer trid;
public RoutesData() {
}
public Integer getRoute() {
return route;
}
public void setRoute(Integer route) {
this.route = route;
}
public Integer getStop_id() {
return stop_id;
}
public void setStop_id(Integer stop_id) {
this.stop_id = stop_id;
}
public Integer getNum() {
return num;
}
public void setNum(Integer num) {
this.num = num;
}
public Integer getRadius() {
return radius;
}
public void setRadius(Integer radius) {
this.radius = radius;
}
public String getAudio() {
return audio;
}
public void setAudio(String audio) {
this.audio = audio;
}
public String getLat() {
return lat;
}
public void setLat(String lat) {
this.lat = lat;
}
public String getLon() {
return lon;
}
public void setLon(String lon) {
this.lon = lon;
}
public Integer getEnd() {
return end;
}
public void setEnd(Integer end) {
this.end = end;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Integer getTrid() {
return trid;
}
public void setTrid(Integer trid) {
this.trid = trid;
}
public Integer getStop_time() {
return stop_time;
}
public void setStop_time(Integer stop_time) {
this.stop_time = stop_time;
}
public Integer getMove_time() {
return move_time;
}
public void setMove_time(Integer move_time) {
this.move_time = move_time;
}
}
And Routes
public class Routes {
public ArrayList<RoutesData> data;
public Routes(ArrayList<RoutesData> data) {
this.data = data;
}
#Override
public String toString() {
return "Response [results=" + data + "]";
}
public ArrayList<RoutesData> getResults() {
return data;
}
}
Class MyVolley
public class MyVolley {
private static RequestQueue mRequestQueue;
private Context context;
public MyVolley() {
}
static void init(Context context) {
mRequestQueue = Volley.newRequestQueue(context);
int memClass = ((ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE))
.getMemoryClass();
// Use 1/8th of the available memory for this memory cache.
int cacheSize = 1024 * 1024 * memClass / 8;
// mImageLoader = new ImageLoader(mRequestQueue, new BitmapLruCache(cacheSize));
}
public static RequestQueue getRequestQueue(Context mContext) {
if (mRequestQueue == null) {
mRequestQueue = Volley.newRequestQueue(mContext);
}
return mRequestQueue;
}
}
class gsonrequest
public class GsonRequest<T> extends Request<T> {
private final Gson gson = new Gson();
private final Class<T> clazz;
private final Map<String, String> headers;
private final Response.Listener<T> listener;
/**
* Make a GET request and return a parsed object from JSON.
*
* #param url URL of the request to make
* #param clazz Relevant class object, for Gson's reflection
* #param headers Map of request headers
*/
public GsonRequest(String url, Class<T> clazz, Map<String, String> headers,
Response.Listener<T> listener, Response.ErrorListener errorListener) {
super(Method.GET, url, errorListener);
this.clazz = clazz;
this.headers = headers;
this.listener = listener;
}
#Override
public Map<String, String> getHeaders() throws AuthFailureError {
return headers != null ? headers : super.getHeaders();
}
#Override
protected void deliverResponse(T response) {
listener.onResponse(response);
}
#Override
protected Response<T> parseNetworkResponse(NetworkResponse response) {
try {
String json = new String(
response.data,
HttpHeaderParser.parseCharset(response.headers));
Log.d("Response.success", json.toString());
return Response.success(
gson.fromJson(json, clazz),
HttpHeaderParser.parseCacheHeaders(response));
} catch (UnsupportedEncodingException e) {
return Response.error(new ParseError(e));
} catch (JsonSyntaxException e) {
return Response.error(new ParseError(e));
}
}
}
I don`t know how to receive all data
Logcat output in Android Studio
The logout
D/Response.success: {"status":true,"data"
:[{"route":1,"num":1,"stop_id":30,"name":"\u043f\u043b.......etc..
not full the line, the next line I had the error
D/ERROR RESPONSE: ERROR RESPONSE Routes
If I understand right the memory is not enough for all array of json massive
I had tried to increase it via
int cacheSize = 2048 * 2048 * memClass / 8;
but not luck
I had to receive all massive not devided it
Sorry for my formatted code

Android: Draw direction in google map java

how to find the best route for multiple locations in google maps api in android? I have some locations as LatLng but I dont know how specify a optimal route

ArrayList<LatLng> directionPoint = latLongList;
PolylineOptions rectLine = new PolylineOptions().width(8).color(
Color.RED);
for (int i = 0; i < directionPoint.size(); i++) {
rectLine.add(directionPoint.get(i));
}
// Adding route on the map
map.addPolyline(rectLine);
Try this , pass your list of latlongs in latLongList

Using Google maps direction api you can acheive it, follow the documentation about using waypoints -
https://developers.google.com/maps/documentation/directions/intro#Waypoints
Now a fully functional api looks like this -
https://maps.googleapis.com/maps/api/directions/json?origin=Adelaide,SA&destination=Adelaide,SA&waypoints=optimize:true|Barossa+Valley,SA|Clare,SA|Connawarra,SA|McLaren+Vale,SA&key=YOUR_API_KEY
Here origin = starting point, destination = Ending point, waypoints = points that you want to cover, optimize:true = the route through the given waypoints will be optimized(i.e following Traveling Salesman Problem) and key = your map api key.
Now in order to save the api response here is the model class -
public class DirectionApiResponse {
private ArrayList<Geocoded_waypoints> geocoded_waypoints;
private String status;
private ArrayList<Routes> routes;
public ArrayList<Geocoded_waypoints> getGeocoded_waypoints ()
{
return geocoded_waypoints;
}
public void setGeocoded_waypoints (ArrayList<Geocoded_waypoints> geocoded_waypoints)
{
this.geocoded_waypoints = geocoded_waypoints;
}
public String getStatus ()
{
return status;
}
public void setStatus (String status)
{
this.status = status;
}
public ArrayList<Routes> getRoutes ()
{
return routes;
}
public void setRoutes (ArrayList<Routes> routes)
{
this.routes = routes;
}
#Override
public String toString()
{
return "ClassPojo [geocoded_waypoints = "+geocoded_waypoints+", status = "+status+", routes = "+routes+"]";
}
public class Geocoded_waypoints
{
private String place_id;
private String geocoder_status;
private ArrayList<String> types;
public String getPlace_id ()
{
return place_id;
}
public void setPlace_id (String place_id)
{
this.place_id = place_id;
}
public String getGeocoder_status ()
{
return geocoder_status;
}
public void setGeocoder_status (String geocoder_status)
{
this.geocoder_status = geocoder_status;
}
public ArrayList<String> getTypes ()
{
return types;
}
public void setTypes (ArrayList<String> types)
{
this.types = types;
}
#Override
public String toString()
{
return "ClassPojo [place_id = "+place_id+", geocoder_status = "+geocoder_status+", types = "+types+"]";
}
}
public class Routes {
private String summary;
private Bounds bounds;
private String copyrights;
private ArrayList<String> waypoint_order;
private ArrayList<Legs> legs;
private ArrayList<String> warnings;
private Overview_polyline overview_polyline;
public String getSummary() {
return summary;
}
public void setSummary(String summary) {
this.summary = summary;
}
public Bounds getBounds() {
return bounds;
}
public void setBounds(Bounds bounds) {
this.bounds = bounds;
}
public String getCopyrights() {
return copyrights;
}
public void setCopyrights(String copyrights) {
this.copyrights = copyrights;
}
public ArrayList<String> getWaypoint_order() {
return waypoint_order;
}
public void setWaypoint_order(ArrayList<String> waypoint_order) {
this.waypoint_order = waypoint_order;
}
public ArrayList<Legs> getLegs() {
return legs;
}
public void setLegs(ArrayList<Legs> legs) {
this.legs = legs;
}
public ArrayList<String> getWarnings() {
return warnings;
}
public void setWarnings(ArrayList<String> warnings) {
this.warnings = warnings;
}
public Overview_polyline getOverview_polyline() {
return overview_polyline;
}
public void setOverview_polyline(Overview_polyline overview_polyline) {
this.overview_polyline = overview_polyline;
}
#Override
public String toString() {
return "ClassPojo [summary = " + summary + ", bounds = " + bounds + ", copyrights = " + copyrights + ", waypoint_order = " + waypoint_order + ", legs = " + legs + ", warnings = " + warnings + ", overview_polyline = " + overview_polyline + "]";
}
public class Bounds
{
private Southwest southwest;
private Northeast northeast;
public Southwest getSouthwest ()
{
return southwest;
}
public void setSouthwest (Southwest southwest)
{
this.southwest = southwest;
}
public Northeast getNortheast ()
{
return northeast;
}
public void setNortheast (Northeast northeast)
{
this.northeast = northeast;
}
#Override
public String toString()
{
return "ClassPojo [southwest = "+southwest+", northeast = "+northeast+"]";
}
public class Southwest
{
private String lng;
private String lat;
public String getLng ()
{
return lng;
}
public void setLng (String lng)
{
this.lng = lng;
}
public String getLat ()
{
return lat;
}
public void setLat (String lat)
{
this.lat = lat;
}
#Override
public String toString()
{
return "ClassPojo [lng = "+lng+", lat = "+lat+"]";
}
}
public class Northeast
{
private String lng;
private String lat;
public String getLng ()
{
return lng;
}
public void setLng (String lng)
{
this.lng = lng;
}
public String getLat ()
{
return lat;
}
public void setLat (String lat)
{
this.lat = lat;
}
#Override
public String toString()
{
return "ClassPojo [lng = "+lng+", lat = "+lat+"]";
}
}
}
public class Overview_polyline {
private String points;
public String getPoints() {
return points;
}
public void setPoints(String points) {
this.points = points;
}
#Override
public String toString() {
return "ClassPojo [points = " + points + "]";
}
}
public class Legs {
private Duration duration;
private Distance distance;
private End_location end_location;
private String start_address;
private String end_address;
private Start_location start_location;
private ArrayList<String> traffic_speed_entry;
private ArrayList<String> via_waypoint;
private ArrayList<Steps> steps;
public Duration getDuration() {
return duration;
}
public void setDuration(Duration duration) {
this.duration = duration;
}
public Distance getDistance() {
return distance;
}
public void setDistance(Distance distance) {
this.distance = distance;
}
public End_location getEnd_location() {
return end_location;
}
public void setEnd_location(End_location end_location) {
this.end_location = end_location;
}
public String getStart_address() {
return start_address;
}
public void setStart_address(String start_address) {
this.start_address = start_address;
}
public String getEnd_address() {
return end_address;
}
public void setEnd_address(String end_address) {
this.end_address = end_address;
}
public Start_location getStart_location() {
return start_location;
}
public void setStart_location(Start_location start_location) {
this.start_location = start_location;
}
public ArrayList<String> getTraffic_speed_entry() {
return traffic_speed_entry;
}
public void setTraffic_speed_entry(ArrayList<String> traffic_speed_entry) {
this.traffic_speed_entry = traffic_speed_entry;
}
public ArrayList<String> getVia_waypoint() {
return via_waypoint;
}
public void setVia_waypoint(ArrayList<String> via_waypoint) {
this.via_waypoint = via_waypoint;
}
public ArrayList<Steps> getSteps() {
return steps;
}
public void setSteps(ArrayList<Steps> steps) {
this.steps = steps;
}
#Override
public String toString() {
return "ClassPojo [duration = " + duration + ", distance = " + distance + ", end_location = " + end_location + ", start_address = " + start_address + ", end_address = " + end_address + ", start_location = " + start_location + ", traffic_speed_entry = " + traffic_speed_entry + ", via_waypoint = " + via_waypoint + ", steps = " + steps + "]";
}
public class Duration {
private String text;
private String value;
public String getText() {
return text;
}
public void setText(String text) {
this.text = text;
}
public String getValue() {
return value;
}
public void setValue(String value) {
this.value = value;
}
#Override
public String toString() {
return "ClassPojo [text = " + text + ", value = " + value + "]";
}
}
public class Start_location
{
private String lng;
private String lat;
public String getLng ()
{
return lng;
}
public void setLng (String lng)
{
this.lng = lng;
}
public String getLat ()
{
return lat;
}
public void setLat (String lat)
{
this.lat = lat;
}
#Override
public String toString()
{
return "ClassPojo [lng = "+lng+", lat = "+lat+"]";
}
}
public class End_location {
private String lng;
private String lat;
public String getLng() {
return lng;
}
public void setLng(String lng) {
this.lng = lng;
}
public String getLat() {
return lat;
}
public void setLat(String lat) {
this.lat = lat;
}
#Override
public String toString() {
return "ClassPojo [lng = " + lng + ", lat = " + lat + "]";
}
}
public class Distance {
private String text;
private String value;
public String getText() {
return text;
}
public void setText(String text) {
this.text = text;
}
public String getValue() {
return value;
}
public void setValue(String value) {
this.value = value;
}
#Override
public String toString() {
return "ClassPojo [text = " + text + ", value = " + value + "]";
}
}
public class Steps
{
private String html_instructions;
private Duration duration;
private Distance distance;
private End_location end_location;
private Polyline polyline;
private Start_location start_location;
private String travel_mode;
public String getHtml_instructions ()
{
return html_instructions;
}
public void setHtml_instructions (String html_instructions)
{
this.html_instructions = html_instructions;
}
public Duration getDuration ()
{
return duration;
}
public void setDuration (Duration duration)
{
this.duration = duration;
}
public Distance getDistance ()
{
return distance;
}
public void setDistance (Distance distance)
{
this.distance = distance;
}
public End_location getEnd_location ()
{
return end_location;
}
public void setEnd_location (End_location end_location)
{
this.end_location = end_location;
}
public Polyline getPolyline ()
{
return polyline;
}
public void setPolyline (Polyline polyline)
{
this.polyline = polyline;
}
public Start_location getStart_location ()
{
return start_location;
}
public void setStart_location (Start_location start_location)
{
this.start_location = start_location;
}
public String getTravel_mode ()
{
return travel_mode;
}
public void setTravel_mode (String travel_mode)
{
this.travel_mode = travel_mode;
}
#Override
public String toString()
{
return "ClassPojo [html_instructions = "+html_instructions+", duration = "+duration+", distance = "+distance+", end_location = "+end_location+", polyline = "+polyline+", start_location = "+start_location+", travel_mode = "+travel_mode+"]";
}
public class Polyline
{
private String points;
public String getPoints ()
{
return points;
}
public void setPoints (String points)
{
this.points = points;
}
#Override
public String toString()
{
return "ClassPojo [points = "+points+"]";
}
}
}
}
}
}
Now to draw the route in between way-points you can use the below method -
private void setRoutePath(DirectionApiResponse directionObj){
gMap.clear();
addMarkers(localLeedsArrayList);
int count = 0;
ArrayList<LatLng> points = null;
DirectionApiResponse.Routes route = directionObj.getRoutes().get(0);
// Traversing through all the routes
for(DirectionApiResponse.Routes.Legs leg : route.getLegs()){
PolylineOptions lineOptions = new PolylineOptions();
points = new ArrayList<LatLng>();
Log.e("Route", leg.getStart_address()+" "+leg.getEnd_address());
// Fetching all the points in i-th route
//for(DirectionApiResponse.Routes.Legs.Steps step : leg.getSteps()){
for(int j=0;j<leg.getSteps().size();j++){
DirectionApiResponse.Routes.Legs.Steps step = leg.getSteps().get(j);
points.addAll(PolyUtil.decode(step.getPolyline().getPoints()));
}
// Adding all the points in the route to LineOptions
lineOptions.addAll(points);
lineOptions.width(20);
lineOptions.color(colors[count]);
Polyline polylineFinal = gMap.addPolyline(lineOptions);
count++;
}
Log.e("SouthWest",directionObj.getRoutes().get(0).getBounds().getSouthwest().getLat()+" "+directionObj.getRoutes().get(0).getBounds().getSouthwest().getLng());
Log.e("northeast",directionObj.getRoutes().get(0).getBounds().getNortheast().getLat()+" "+directionObj.getRoutes().get(0).getBounds().getNortheast().getLng());
/*LatLng lSouth = new LatLng(Double.valueOf(directionObj.getRoutes().get(0).getBounds().getSouthwest().getLat()),
Double.valueOf(directionObj.getRoutes().get(0).getBounds().getSouthwest().getLng()));
LatLng lNorth = new LatLng(Double.valueOf(directionObj.getRoutes().get(0).getBounds().getNortheast().getLat()),
Double.valueOf(directionObj.getRoutes().get(0).getBounds().getNortheast().getLng()));
LatLngBounds latLngBounds = new LatLngBounds(lNorth,lSouth);
gMap.animateCamera(CameraUpdateFactory.newLatLngBounds(latLngBounds,14));*/
gMap.animateCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(mCurrentLocation.getLatitude(),mCurrentLocation.getLongitude()),15));
}
Here gMap is the google map object..
******* UPDATE Api Calling********
In order to call the api Create interface IApiMethods and put the code below -
#GET("json?origin=35.693391,51.424261&destination=35.692032,51.432715&waypoints=35.691997,51.432758")
Call<DirectionApiResponse> getDirectionWalking(#Query("key")String key);
you can change the co-ordinates accordingly
Now call the method below to call the api and get the DirectionApiResponse object
private void getDirection(){
Retrofit retrofit = new Retrofit.Builder()
.baseUrl("https://maps.googleapis.com/maps/api/directions/")
.addConverterFactory(GsonConverterFactory.create())
.build();
IApiMethods service = retrofit.create(IApiMethods.class);
Call<DirectionApiResponse> directionApiResponseCall = service.getDirectionWalking("YOUR API KEY");
directionApiResponseCall.enqueue(new Callback<DirectionApiResponse>() {
#Override
public void onResponse(Call<DirectionApiResponse> call, Response<DirectionApiResponse> response) {
setRoutePath(response.body());
}
#Override
public void onFailure(Call<DirectionApiResponse> call, Throwable t) {
}
});
}
Finally add the following dependencies to the app's build.gradle file -
compile 'com.google.android.gms:play-services-maps:8.4.0'
compile 'com.squareup.retrofit2:retrofit:2.1.0'
compile 'com.squareup.retrofit2:converter-gson:2.0.2'

How to get the route
You might want to look at the Distance Matrix service: https://developers.google.com/maps/documentation/javascript/distancematrix
It gives you distances between a set of origins and destinations, and might help you with narrowing down options.
2. To Find the best route :
If using the web service, ensure you set optimize:true before listing your waypoints, and check the waypoint_order array.
http://maps.googleapis.com/maps/api/directions/json?origin=Adelaide,SA&destination=Adelaide,SA&waypoints=optimize:true|Barossa+Valley,SA|Clare,SA|Connawarra,SA|McLaren+Vale,SA&sensor=false
If use the JS API, set optimizeWaypoints:true in your request.
3. To draw polyline with the latlongs you have
PolylineOptions options = new PolylineOptions().width(5).color(Color.BLUE).geodesic(true);
for (int z = 0; z < list.size(); z++) {
LatLng point = list.get(z);
options.add(point);
}
line = myMap.addPolyline(options);

Java printDailyCost method

I have been asked to implement a printDailyCost method which should call the getDailyCost method and format the value returned to two
decimal places. It should then print this value along with a £ sign.
So far I have:
public abstract class Suit {
private String colour;
private double dailyCost;
private int trouserLength;
private int jacketChestSize;
private boolean available;
private double totalPrice;
public Suit(String colour, double dailyCost, int trouserLength,
int jacketChestSize, boolean available, double totalPrice) {
super();
this.colour = colour;
this.dailyCost = dailyCost;
this.trouserLength = trouserLength;
this.jacketChestSize = jacketChestSize;
this.available = available;
this.totalPrice = totalPrice;
}
public String getColour() {
return colour;
}
public double getDailyCost() {
return dailyCost;
}
public int getTrouserLength() {
return trouserLength;
}
public int getJacketChestSize() {
return jacketChestSize;
}
public boolean isAvailable() {
return available;
}
public double getTotalPrice() {
return totalPrice;
}
public void setColour(String colour) {
this.colour = colour;
}
public void setDailyCost(double dailyCost) {
this.dailyCost = dailyCost;
}
public void setTrouserLength(int trouserLength) {
this.trouserLength = trouserLength;
}
public void setJacketChestSize(int jacketChestSize) {
this.jacketChestSize = jacketChestSize;
}
public void setAvailable(boolean available) {
this.available = available;
}
public void setTotalPrice(double totalPrice) {
this.totalPrice = totalPrice;
}
public void calcTotalPrice(int numDaysHired){
this.totalPrice = dailyCost * numDaysHired;
}
public String printDailyCost() {
return printDailyCost();
}
}
My Question is how would I amend my printDailyCost method to call the getDailyCost method and format the value returned to two
decimal places then print with a £ sign?

Check this out:
java.text.NumberFormat format = java.text.NumberFormat.getCurrencyInstance(java.util.Locale.UK);
System.out.println(format.format(getDailyCost()));

You can simply add them together and return it:
public String printDailyCost() {
return getDailyCost() + " £";
}
However I don't recommend to concatenate String with this way. Better use the following method using StringBuilder, that concatenates strings in the correct way:
public String printDailyCost() {
return (new StringBuilder().append(getDailyCost()).append(" £")).toString();
}
Or if you want to print it out to console, just do this:
System.out.println(getDailyCost() + " £");

List of class objects from list of strings

I am getting data from gemfire
List<String> objects = restTemplate.getForObject(geodeURL+"/gemfire-api/v1/queries/adhoc?q=SELECT * FROM /region s",List.class);
which is like below:
[('price':'119','volume':'20000','pe':'0','eps':'4.22','week53low':'92','week53high':'134.4','daylow':'117.2','dayhigh':'119.2','movingav50day':'115','marketcap':'0','time':'2015-11-25 05:13:34.996'), ('price':'112','volume':'20000','pe':'0','eps':'9.22','week53low':'92','week53high':'134.4','daylow':'117.2','dayhigh':'119.2','movingav50day':'115','marketcap':'0','time':'2015-11-25 05:13:34.996'), ('price':'118','volume':'20000','pe':'0','eps':'1.22','week53low':'92','week53high':'134.4','daylow':'117.2','dayhigh':'119.2','movingav50day':'115','marketcap':'0','time':'2015-11-25 05:13:34.996')]
This is a list of String I am getting.Currently I have 3 values in list.
I have a pojo class like below:
public class StockInfo {
// #Id
#JsonProperty("symbol")
private String symbol;
#JsonProperty("price")
private String price;
#JsonProperty("volume")
private String volume;
#JsonProperty("pe")
private String pe;
#JsonProperty("eps")
private String eps;
#JsonProperty("week53low")
private String week53low;
#JsonProperty("week53high")
private String week53high;
#JsonProperty("daylow")
private String daylow;
#JsonProperty("dayhigh")
private String dayhigh;
#JsonProperty("movingav50day")
private String movingav50day;
#JsonProperty("marketcap")
private String marketcap;
#JsonProperty("time")
private String time;
private String getSymbol() {
return symbol;
}
public void setSymbol(String symbol) {
this.symbol = symbol;
}
public String getPrice() {
return price;
}
public void setPrice(String price) {
this.price = price;
}
public String getVolume() {
return volume;
}
public void setVolume(String volume) {
this.volume = volume;
}
public String getPe() {
return pe;
}
public void setPe(String pe) {
this.pe = pe;
}
public String getEps() {
return eps;
}
public void setEps(String eps) {
this.eps = eps;
}
public String getWeek53low() {
return week53low;
}
public void setWeek53low(String week53low) {
this.week53low = week53low;
}
public String getWeek53high() {
return week53high;
}
public void setWeek53high(String week53high) {
this.week53high = week53high;
}
public String getDaylow() {
return daylow;
}
public void setDaylow(String daylow) {
this.daylow = daylow;
}
public String getDayhigh() {
return dayhigh;
}
public void setDayhigh(String dayhigh) {
this.dayhigh = dayhigh;
}
public String getMovingav50day() {
return movingav50day;
}
public void setMovingav50day(String movingav50day) {
this.movingav50day = movingav50day;
}
public String getMarketcap() {
return marketcap;
}
public void setMarketcap(String marketcap) {
this.marketcap = marketcap;
}
public String getTime() {
return time;
}
public void setTime(String time) {
this.time = time;
}
How do I create a List of StockInfo class object from the value I am getting from restTemplate.getForObject

I think you could just use:
List<StockInfo> objects = restTemplate.getForObject(geodeURL+"/gemfire-api/v1/queries/adhoc?q=SELECT * FROM /region s",List.class);