gistfile1.txt

package order;

import twitter4j.HttpClient;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 * Created with IntelliJ IDEA.
 * User: yusuke
 * Date: 2013/10/17
 * Time: 12:33
 * To change this template use File | Settings | File Templates.
 */
public class Rate {
    public static void main(String[] args) {
        System.out.println(getUSDJPYRate());
    }

    public static double getUSDJPYRate(){
        HttpClient client = twitter4j.HttpClientFactory.getInstance();
        double rate;
        try {
            String result = client.get("https://www.google.com/finance/converter?a=1&from=USD&to=JPY").asString();
            Pattern p = Pattern.compile("<span class=bld>([0-9\\.]*) JPY</span>");
            Matcher m = p.matcher(result);
            m.find();
            String str = m.group(1);
            rate = Double.parseDouble(str.split(" ")[0]);
        } catch (Exception e) {
            e.printStackTrace();
            rate = 100d;
        }
        return rate;
    }
}