将字符串解析为double的java.lang.NumberFormatException

Question

I cant figure it out

double d = Double.valueOf(str);
double d2 = Double.parseDouble(str);

both methods produce the following exception:

java.lang.NumberFormatException: Invalid double: "‎-73.04"

However, the following hardcoded value works just fine:

double d = Double.valueOf("-73.04");

Answer 1

After copying the number from the title of this question and pasting into IntelliJ between double-quotes, it became clear what the problem is:

double d = Double.parseDouble("\u200E-73.04");

Exception in thread "main" java.lang.NumberFormatException: For input string: "?-73.04"

Copying it from your hard-coded -73.04 does not have this behavior.

You have a "left-to-right mark" Unicode character in your string somehow. You must eliminate that extraneous Unicode character from your string before parsing it.