java.lang.NumberFormatException: For input string: “null”

Question

I\'m parsing a doc and I get the following error:

Exception in thread \"main\" java.lang.NumberFormatException: For input string: \"null\"
    at sun.misc.Fl         


        

Answer 1

Maybe one of the values is "null" (for example, the string : "123.4 null 5 null") not the first one, so I think a proper solution will be:

String[] latValues = latitude.split(" ");
float sum = 0;
for (int i = 0; i < latValues.length; i++) {              
    if (!latValues[i].equals("null"))
        sum = sum + Float.valueOf(latValues[i].trim()).floatValue();
}
latitude = Float.toString(sum / (float) latValues.length);

or instead, add try-cath inside the for loop and ignore values that are not numbers.

EDIT

As pointed in comments (Sualeh), it is better to use try / catch because today it's "null" tomorrow it's something else (i.e. double spaces...).

try {
sum = sum + Float.valueOf(latValues[i].trim()).floatValue();
}
catch (NumberFormatException e)
{
// log e if you want...
}