Hi,

I expect to recive double data from IMessage, but sometimes also recive String message. the question is:

-How to detect if the data is a string or double?, and if is a string, how to convert to double?

example: if recive 7,2% (string), how to convert to double 7,2.

NOTE: the error that display is: java.lang.NumberFormatException : For input string:"7,2%"

Thank you

It is not advised to rely on message string contents as they are subject to change, hence in such case you will need to rewrite your strategy.
However, if you still want to do it, you need to use string and double operations like:

• String.substring
• String.indexOf
• Double.parseDouble

ok.

but for example on the following link https://www.dukascopy.com/wiki/#Trade_on_news.

String previous = newsDetail.getPrevious(); //get data
then
double previousValue = Double.valueOf(previous.trim()).doubleValue(); // convert data to double using valueOf

but, when recive data with % have the error.

https://www.javascripter.net/faq/convert2.htm --> posible solution?

BR

Fix it.

using str.replace("","") and then convert to double

thank you