Java : Get FX sentiment from website example



Tags : javafxforexbearishbullishsentimentdailyfx

A quick Java implementation of my previous Golang tutorial on how to "scrape" FX(forex) sentiment data from a web page using Jsoup. The Jsoup library provides web scraping part and all we need to do is to configure it to look for the right element to grab.

NOTE : The example below is configured to get sentiment data from dailyfx.com and it shouldn't be hard to re-configure to get sentiment data from other websites. Sentiment data can be useful for trader looking to see what the other market participants think or feel.

Here you go!


 import java.util.Scanner;

 import java.io.IOException;

 import org.jsoup.Jsoup;
 import org.jsoup.nodes.Document;
 import org.jsoup.nodes.Element;
 import org.jsoup.select.Elements;

 public class GetFXSentiment {
  public static void main(String[] args) throws IOException {

 // sanity check
 if (args.length < 1) {
 System.err.println("Usage : need url parameter to fetch sentiment");
 System.exit(1);
 }

 String url = args[0];

 try {
 // Here we create a document object and use JSoup to fetch the website
 Document doc = Jsoup.connect(url).get();

 // With the document fetched, we use JSoup's title() method to fetch the title
 System.out.printf("Title: %s\n", doc.title());

 Elements row = doc.getElementsByClass("text-capitalize");
 //Elements row = doc.select("ins-data text-capitalize"); -- not good

 // we are interested in the first row, ignore the rest
 String sentiment = row.get(0).text().toLowerCase();


 if (sentiment.matches("mixed")) {
 System.out.println(sentiment);
 } else if (sentiment.matches("bearish")) {
 System.out.println(sentiment);
 } else if (sentiment.matches("bullish")) {
 System.out.println(sentiment);
 } else {
 System.out.println("Missing sentiment data for this instrument/cross/pair.");
 }



 // In case of any IO errors, we want the messages written to the console
 } catch (IOException e) {
 e.printStackTrace();
 }
  }
 }

Sample output under Linux:

$ java -cp .:jsoup-1.12.1.jar GetFXSentiment http://dailyfx.com/eur-usd

Title: EUR/USD - Live Rate, Forecast, News and Analysis

mixed

Sample output under Windows:

java -cp .;jsoup-1.12.1.jar GetFXSentiment http://dailyfx.com/nzd-usd

Title: NZD/USD - New Zealand Dollar Price, Forecast, News & Analysis

bearish

References :

https://jsoup.org/cookbook/extracting-data/selector-syntax

https://stackoverflow.com/questions/22362816/issue-with-running-java-class-file-containing-jsoup-dependency

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  See also : Golang : Get FX sentiment from website example



Tags : javafxforexbearishbullishsentimentdailyfx

By Adam Ng(黃武俊)

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