The parse method should be used with the individual Strings created by the split method, not the full String that includes all the numbers.
The println statement prints out the String that should be passed to the parse method.
All i want it to do is to read the file, convert to float
You left out the step to isolate each of the numbers in the String read from the file before converting that isolated String to float.
If there were only ONE number on each line, then the posted code would work. However there is more than one separated by commas. So the code needs to get each number separately using the split method.