$1.$ Now we need to add lines to allow us to read from the input file and calculate the mean. a$.$ Create a FileReader object passing it the filename. b$.$ Create a BufferedReader object passing it the FileReader object. $2.$ Write a priming read to read the first line of the file. $3.$ Write a loop that continues until you are at the end of the file. $4.$ The body of the loop will: a$.$ convert the line into a double value and add the value to the accumulator b$.$ increment the counter c$.$ read a new line from the file $5.$ When the program exits the loop close the input file. $6.$ Calculate and store the mean. The mean is calculated by dividing the accumulator by the counter. $7.$ Compile, debug, and run. You should now get a mean of $77\mathrm{.}444,$ but the standard deviation will still be $0\mathrm{.}000.$