Problem description:

Ai has an app idea. They want to create an app which will allow them to track statistics related to their

daily runs. Ai records their runs in segments. Each run is multiple segments, but not all runs are

necessarily the same number of segments. Ai records the length of each segment of the run in

kilometers, and the time of each segment in seconds. Ai stores these recordings in plain text files for

each run. Ai wants their app to take each run and output the calories they burned during the run, the

average speed of the run $($in mph$),$ the total distance of the run, and the total time duration of the run in

minutes.

caloriesBurnedPerMinute$=3\mathrm{.}5($ time$($minutes$)$MET$$weight $($ kg$))$

$200$

A metabolic equivalent for a task $($MET$)$ is a unit that estimates the amount of energy expended by the

body during a physical activity. $1$ MET is defined for when the body is at rest. You may use the following

table to determine MET. Round speed values to the nearest whole number.

Speed $($mph$)$ MET

$58\mathrm{.}3$

$69\mathrm{.}8$

$711$

$811\mathrm{.}8$

$912\mathrm{.}8$

$1014\mathrm{.}5$

$1116$

$1219$

$1319\mathrm{.}8$

$1423$

Ai would like the app to be menu driven. The menu will have three options. Option $1$ will allow Ai to

supply a file name with data for a single run, or a directory with files for multiple runs and calculate all

the statistics for the given data. The data will then be saved in a file named after the input file$/$directory$.$

Option $2$ will allow Ai to output statistics for any previously saved runs. Option $3$ will end the program.

Ai asks that you write a prototype for their app.

Task description:

Write a Java program for Ai$$s app idea. You should validate any user input and gracefully handle any

exceptions i$.$e$.,$ if the exception is recoverable, you should recover from it$.$

In particular, your program should do the following:

$1.$ When the program starts, prompt the user to enter their weight in kg$.$

a$.$ You should validate the user$$s input.

$2.$ Display a menu with the three menu options and prompt the user for input.

a$.$ You should validate the user$$s input and continue prompting the user until they enter a

valid input.

$3.$ When option $1$ is chosen:

a$.$ Prompt the user for the name of a file or directory.

i$.$ Display the current working directory.

ii$.$ You should validate the user$$s input.

iii. If they enter a name for a file or directory that does not exist, continue to

prompt for input.

b$.$ If the user enters a file name, calculate the required statistics $($calories burned, average

speed, total distance, and total time duration$)$ from the given file name.

c$.$ Save the statistics to a file named after the input file name in an output directory.

d$.$ If the user enters a directory name, for each file in the directory do $($b$)$ and $($c$)$

e$.$ Return to the main menu.

$4.$ When option $2$ is chosen:

a$.$ Output the contents of the output directory and prompt the user to choose a file.

i$.$ If the output directory is empty, instead prompt the user to choose option $1$ and

return to the main menu.

ii$.$ You can allow the user to enter a file name or choose a discrete menu option.

iii. You should validate the user$$s input.

b$.$ Output the statistics in the chosen file to the console.

i$.$ The output format is shown below.

c$.$ Return to the main menu.

$5.$ When option $3$ is chosen:

a$.$ Terminate the program.

Calories: $139\mathrm{.}917$Speed:

$2963\mathrm{.}589$Distance: $1185\mathrm{.}000$Duration:

$84\mathrm{.}117$