Get dynamic data of a stock

we need to get live data of a stock from its webpage (http://tsetmc.com/Loader.aspx?ParTree=151311&i=46348559193224090) as you see on link above there are lots of data and numbers and we need all of them for a bot.for example each second "حجم معاملات" is changing , and we need to get that number every time that user request our bot.

how can we get those date,live, in java ? thanks for your helps.