Java

Simple REST Example

See more REST Examples

Demonstrates a very simple RESTful API call to get a stock time series daily (quotes) from Alpha Vantage. Chilkat2 Java

import com.chilkatsoft.chilkat2.ChilkatException;
import com.chilkatsoft.chilkat2.Rest;

public class ChilkatExample {

    public static void main(String[] args) {
        // This example requires the Chilkat API to have been previously unlocked.
        // See Global Unlock Sample for sample code.

        Rest rest = new Rest();

        // Connect to the REST server.
        boolean bTls = true;
        int port = 443;
        boolean bAutoReconnect = true;
        String responseJson;
        try {
            rest.connect("www.alphavantage.co", port, bTls, bAutoReconnect);

            // Get a stock quote:
            // Sending GET request to https://www.alphavantage.co/query?function=TIME_SERIES_DAILY&symbol=MSFT&apikey=my_api_key
            rest.addQueryParam("function", "TIME_SERIES_DAILY");
            rest.addQueryParam("symbol", "AAPL");
            rest.addQueryParam("apikey", "my_api_key");
            responseJson = rest.fullRequestNoBody("GET", "/query");
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        System.out.println(responseJson);

        // Sample response:
        // {
        //     "Meta Data": {
        //         "1. Information": "Daily Prices (open, high, low, close) and Volumes",
        //         "2. Symbol": "AAPL",
        //         "3. Last Refreshed": "2019-12-06",
        //         "4. Output Size": "Compact",
        //         "5. Time Zone": "US/Eastern"
        //     },
        //     "Time Series (Daily)": {
        //         "2019-12-06": {
        //             "1. open": "267.4800",
        //             "2. high": "271.0000",
        //             "3. low": "267.3000",
        //             "4. close": "270.7100",
        //             "5. volume": "25447644"
        //         },
        //         "2019-12-05": {
        //             "1. open": "263.7900",
        //             "2. high": "265.8900",
        //             "3. low": "262.7300",
        //             "4. close": "265.5800",
        //             "5. volume": "18661343"
        //         },
        //         "2019-12-04": {
        //             "1. open": "261.0700",
        //             "2. high": "263.3100",
        //             "3. low": "260.6800",
        //             "4. close": "261.7400",
        //             "5. volume": "16810388"
        //         },
        // ...
        //         "2019-07-18": {
        //             "1. open": "204.0000",
        //             "2. high": "205.8800",
        //             "3. low": "203.7000",
        //             "4. close": "205.6600",
        //             "5. volume": "18582161"
        //         }
        //     }
        // }
    }
}