Code that scrapes data from an HTML page using Selenium and stores it as a GeoJSON object. Which, by the way, is just a JSON object it turns out. With a particular format. Just FYI. Y'know. Cuz I didn't.

HTMLtoGeoJSON.java

public class HTMLtoGeoJSON
{
    public static void main(String[] args)
    {
        //Create the Selenium WebDriver object
        WebDriver driver = new FirefoxDriver();

        //Navigate to the subway locations page
        driver.get("http://wiki.openstreetmap.org/wiki/List_of_London_Underground_stations");

        //Find and store the table element
        WebElement table = driver.findElement(By.className("wikitable"));

        //Store all the rows in the table
        List<WebElement> list = table.findElements(By.xpath("/html/body/div[3]/div[2]/div[4]/table[2]/tbody/tr"));

        //Create the JSONObject the geo data will be stored in
        JSONObject geoObject = new JSONObject();
        //Create the JSONArray that will hold the geo data
        JSONArray stations = new JSONArray();

        //Go through each row in the table
        for(int x = 0; x<list.size(); x++)
        {
            //Store the columns of each row in a new list
            List<WebElement> newList = list.get(x).findElements(By.xpath("td"));

            //Create a new JSONObject to store the station details in
            JSONObject object = new JSONObject();

            //Because the first row of the table returns no data, not including this if kills the program.
            //Lame, I know.
            if(newList.size()>0)
            {
                //Define the station object
                object.put("type", "Feature");

                //Create the geometry object
                JSONObject geometry = new JSONObject();
                //Add the geometry properties
                geometry.put("type", "Point");
                //Create a JSONArray for the coordinates
                JSONArray coords = new JSONArray();
                //Add the coordinates to the array
                coords.add(Double.parseDouble(newList.get(1).getText().substring(0,7)));
                coords.add(Double.parseDouble(newList.get(2).getText().substring(0,7)));
                //Add the coords array to the geometry object
                geometry.put("coordinates", coords);
                //Add the geometry object to the station
                object.put("geometry", geometry);

                //Create the properties object
                JSONObject properties = new JSONObject();
                properties.put("name", newList.get(0).getText());
                //Add the properties object to the station
                object.put("properties", properties);

                stations.add(object);
            }

        }

        geoObject.put("features", stations);
        //Define the type of the GeoJSON object
        geoObject.put("type", "FeatureCollection");

        //Hit it and quit it. I'M NOT A DOUCHE.
        driver.quit();

        //Create the JSON file and write the data to it
        try {
            FileWriter file = new FileWriter("/Users/scitasy/geostations.json");
            file.write(geoObject.toJSONString());
            file.flush();
            file.close();
        } catch (IOException e) {
            e.printStackTrace();  //To change body of catch statement use File | Settings | File Templates.
        }
    }
}