无法将String解析为long

Question

I am trying to convert a String of digits to a long using Long.parseLong(s) , but I get a NumberFormatException . The string contains just digits. Long.decode(s) doesn't work either. Does anyone know how to resolve this problem?

With other strings, this class works without a problem.

Answer 1

One reason might be leading or trailing whitespace characters, which can be removed using trim(). The other reason might be that the number is out of range of long ( which is a rare case actually, but you might check that as well). Can you provide a sample string ?

Answer 2

Have answer! this string was nulled in current thread before calling next thread, where long value must use. ParseLong could not keep finish parsing :)