title: How to extract a specific part from JSON response with Java in Spring Boot?
body: <p>I am trying to get the current status of a flight from a 3rd party API. I just need very few fields from the JSON. If I do it in the traditional way I would have to create many classes. And, map the json to the classes. Is there a better way of doing it. In the JSON response,I just need the information in the FlightStatuses field.</p>
  
  <pre><code>{
      "request": {
          "airline": {
              "fsCode": "AA",
              "requestedCode": "AA"
          },
          "flight": {
              "requested": "100",
              "interpreted": "100"
          },
          "utc": {
              "requested": "false",
              "interpreted": false
          },
          "url": "https://api.flightstats.com/flex/flightstatus/rest/v2/json/flight/status/AA/100/dep/2019/10/1?utc=false",
          "nonstopOnly": {
              "interpreted": false
          },
          "date": {
              "year": "2019",
              "month": "10",
              "day": "1",
              "interpreted": "2019-10-01"
          }
      },
      "appendix": {
          "airlines": [
              {
                  "fs": "AA",
                  "iata": "AA",
                  "icao": "AAL",
                  "name": "American Airlines",
                  "phoneNumber": "08457-567-567",
                  "active": true
              },
              {
                  "fs": "AY",
                  "iata": "AY",
                  "icao": "FIN",
                  "name": "Finnair",
                  "phoneNumber": "+ 358 600 140 140",
                  "active": true
              },
              {
                  "fs": "IB",
                  "iata": "IB",
                  "icao": "IBE",
                  "name": "Iberia",
                  "phoneNumber": "1800 772 4642",
                  "active": true
              },
              {
                  "fs": "LY",
                  "iata": "LY",
                  "icao": "ELY",
                  "name": "El Al",
                  "phoneNumber": "+ 972-3-9771111",
                  "active": true
              },
              {
                  "fs": "BA",
                  "iata": "BA",
                  "icao": "BAW",
                  "name": "British Airways",
                  "phoneNumber": "1-800-AIRWAYS",
                  "active": true
              },
              {
                  "fs": "GF",
                  "iata": "GF",
                  "icao": "GFA",
                  "name": "Gulf Air",
                  "phoneNumber": "973 17 335 777",
                  "active": true
              }
          ],
          "airports": [
              {
                  "fs": "LHR",
                  "iata": "LHR",
                  "icao": "EGLL",
                  "faa": "",
                  "name": "London Heathrow Airport",
                  "city": "London",
                  "cityCode": "LON",
                  "stateCode": "EN",
                  "countryCode": "GB",
                  "countryName": "United Kingdom",
                  "regionName": "Europe",
                  "timeZoneRegionName": "Europe/London",
                  "weatherZone": "",
                  "localTime": "2019-10-01T15:25:25.492",
                  "utcOffsetHours": 1.0,
                  "latitude": 51.469603,
                  "longitude": -0.453566,
                  "elevationFeet": 80,
                  "classification": 1,
                  "active": true,
                  "weatherUrl": "https://api.flightstats.com/flex/weather/rest/v1/json/all/LHR?codeType=fs",
                  "delayIndexUrl": "https://api.flightstats.com/flex/delayindex/rest/v1/json/airports/LHR?codeType=fs"
              },
              {
                  "fs": "JFK",
                  "iata": "JFK",
                  "icao": "KJFK",
                  "faa": "JFK",
                  "name": "John F. Kennedy International Airport",
                  "street1": "JFK Airport",
                  "city": "New York",
                  "cityCode": "NYC",
                  "stateCode": "NY",
                  "postalCode": "11430",
                  "countryCode": "US",
                  "countryName": "United States",
                  "regionName": "North America",
                  "timeZoneRegionName": "America/New_York",
                  "weatherZone": "NYZ178",
                  "localTime": "2019-10-01T10:25:25.493",
                  "utcOffsetHours": -4.0,
                  "latitude": 40.642335,
                  "longitude": -73.78817,
                  "elevationFeet": 13,
                  "classification": 1,
                  "active": true,
                  "weatherUrl": "https://api.flightstats.com/flex/weather/rest/v1/json/all/JFK?codeType=fs",
                  "delayIndexUrl": "https://api.flightstats.com/flex/delayindex/rest/v1/json/airports/JFK?codeType=fs"
              }
          ],
          "equipments": [
              {
                  "iata": "77W",
                  "name": "Boeing 777-300ER",
                  "turboProp": false,
                  "jet": true,
                  "widebody": true,
                  "regional": false
              }
          ]
      },
      "flightStatuses": [
          {
              "flightId": 1016157813,
              "carrierFsCode": "AA",
              "flightNumber": "100",
              "departureAirportFsCode": "JFK",
              "arrivalAirportFsCode": "LHR",
              "departureDate": {
                  "dateUtc": "2019-10-01T22:15:00.000Z",
                  "dateLocal": "2019-10-01T18:15:00.000"
              },
              "arrivalDate": {
                  "dateUtc": "2019-10-02T05:20:00.000Z",
                  "dateLocal": "2019-10-02T06:20:00.000"
              },
              "status": "S",
              "schedule": {
                  "flightType": "J",
                  "serviceClasses": "RFJY",
                  "restrictions": "",
                  "uplines": [],
                  "downlines": []
              },
              "operationalTimes": {
                  "publishedDeparture": {
                      "dateUtc": "2019-10-01T22:15:00.000Z",
                      "dateLocal": "2019-10-01T18:15:00.000"
                  },
                  "scheduledGateDeparture": {
                      "dateUtc": "2019-10-01T22:15:00.000Z",
                      "dateLocal": "2019-10-01T18:15:00.000"
                  },
                  "estimatedGateDeparture": {
                      "dateUtc": "2019-10-01T22:15:00.000Z",
                      "dateLocal": "2019-10-01T18:15:00.000"
                  },
                  "publishedArrival": {
                      "dateUtc": "2019-10-02T05:20:00.000Z",
                      "dateLocal": "2019-10-02T06:20:00.000"
                  },
                  "scheduledGateArrival": {
                      "dateUtc": "2019-10-02T05:20:00.000Z",
                      "dateLocal": "2019-10-02T06:20:00.000"
                  },
                  "estimatedGateArrival": {
                      "dateUtc": "2019-10-02T05:20:00.000Z",
                      "dateLocal": "2019-10-02T06:20:00.000"
                  }
              },
              "codeshares": [
                  {
                      "fsCode": "AY",
                      "flightNumber": "4012",
                      "relationship": "L"
                  },
                  {
                      "fsCode": "BA",
                      "flightNumber": "1511",
                      "relationship": "L"
                  },
                  {
                      "fsCode": "GF",
                      "flightNumber": "6654",
                      "relationship": "L"
                  },
                  {
                      "fsCode": "IB",
                      "flightNumber": "4218",
                      "relationship": "L"
                  },
                  {
                      "fsCode": "LY",
                      "flightNumber": "8051",
                      "relationship": "L"
                  }
              ],
              "delays": {},
              "flightDurations": {
                  "scheduledBlockMinutes": 425
              },
              "airportResources": {
                  "departureTerminal": "8",
                  "departureGate": "16",
                  "arrivalTerminal": "3"
              },
              "flightEquipment": {
                  "scheduledEquipmentIataCode": "77W",
                  "actualEquipmentIataCode": "77W",
                  "tailNumber": "N730AN"
              }
          }
      ]
  }
  </code></pre>