Java

Finnhub API - Get Stock Quote

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Demonstrates how to get a stock quote from the Finnhub API. Java

import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

  public static void main(String argv[])
  {
    boolean success = false;

    // Replace with your actual Finnhub API key.
    String apiKey = "YOUR_FINNHUB_API_KEY";
    String symbol = "AAPL";

    CkHttp http = new CkHttp();

    // This is the URL without params.
    String urlWithoutParams = "https://finnhub.io/api/v1/quote";

    CkHttpRequest req = new CkHttpRequest();

    // Add params that will be sent in the URL.
    req.AddParam("symbol",symbol);
    req.AddParam("token",apiKey);

    req.put_HttpVerb("GET");

    // Send the request to get the JSON response.
    CkHttpResponse resp = new CkHttpResponse();
    success = http.HttpReq(urlWithoutParams,req,resp);
    if (success == false) {
        System.out.println(http.lastErrorText());
        return;
        }

    CkJsonObject json = new CkJsonObject();
    resp.GetBodyJson(json);

    int statusCode = resp.get_StatusCode();
    System.out.println("response status code: " + statusCode);

    json.put_EmitCompact(false);
    System.out.println(json.emit());

    // Sample result:

    // {
    //   "c": 248.8,
    //   "d": -4.09,
    //   "dp": -1.6173,
    //   "h": 255.493,
    //   "l": 248.07,
    //   "o": 253.9,
    //   "pc": 252.89,
    //   "t": 1774641600
    // }

    if (statusCode == 200) {
        // Add the symbol to the top of the result.
        json.AddStringAt(0,"symbol",symbol);

        // Rename members for clarification.
        json.Rename("c","currentPrice");
        json.Rename("d","change");
        json.Rename("dp","percentChange");
        json.Rename("h","high");
        json.Rename("l","low");
        json.Rename("o","open");
        json.Rename("pc","prevClose");
        json.Rename("t","unixTime");

        System.out.println(json.emit());

        }
    else {
        System.out.println("Failed");
        }
  }
}