有没有一个好的，可靠的开源Java包来获得免费的股票信息？

I used to use my Java programs to get free stock data (historical prices, charts, current prices ...) from Yahoo, but recently it stopped working, because Yahoo doesn't seem to welcome people systematically getting data that way. So I wonder if there is any good (reliable and kept up-to-date) open source Java packages that get free stock info, I don't mind the 20 minute delay.I used to use my Java programs to get free stoc