A$.$ Basic Inheritance:

Write a class named TrainTicket that can be used to represent a train ticket for

a trip. Every train ticket has the name of the passenger, the number of

checked bags, and the trip distance, and we must be able to retrieve each of

these pieces of information for any ticket. $($Note: train tickets are non$-$

transferrable and the trip cannot be changed $-$ this means the name of the

passenger and the trip distance can never change once the ticket is created.$)$

We must also be able to compute the cost of the train when told the per km

rate for the ticket using the method: computeCost$($double rate$).$ The cost of

the ticket must also include the cost of checked bags which is $$45$ per bag.

For example, if the passenger has $3$ checked bags, the trip distance is $1050km$

and the per km rate is $$1\mathrm{.}50,$ the computeCost method will return $1635.$

Next, create a subclass of TrainTicket named BusinessTicket. This class will be

used to represent a train ticket that is in the business train carriages which have

larger seats and more space. The cost of a business ticket has an additional

charge of $$104\mathrm{.}50$ added to the base cost of a train ticket. The business train

cars have both regular seats and reclining seats. Customers may choose to

have a reclining seat for an additional $$55\mathrm{.}75$ charge.

Finally, create a third class named SleeperCarTicket. This class will also be a

subclass of TrainTicket. Sleeper car tickets are for carriages that contain

sleepers $-$ these are seats can be converted into beds. Sleeper car tickets

must also keep track of the number of nights the passenger wants to reserve

the sleeper for. There is an additional charge of $$167$ added to the base cost

for a sleeper car ticket. In addition to this, there is a per night fee. The first

night is $$95,$ and each additional night is $$80.$

Be sure to write javadoc comments for all three classes. Include a comment

for the class, for each instance variable and constant, and for each method.

Use @author, @param & @return tags where appropriate.

B$.$ Test Driver

Write a test driver named TicketApp that exercises many of the methods from

the TrainTicket, Businessticket and SleeperTicket classes. Use the following test

values:

Grace purchased her ticket during peak season at a per $km$ rate of $$\frac{1\mathrm{.}35}{k}m.$

Joy purchased her ticket using her frequent rider card and received a reduced

rate of $$\frac{0\mathrm{.}75}{k}m.$

Tim purchased his ticket during the off season at a per $km$ rate of $$\frac{1\mathrm{.}15}{k}m.$

Margaret purchased her ticket during peak season also, her rate was $$\frac{1\mathrm{.}20}{k}m.$

Barbara purchased her ticket during the off season at a per km rate of

$$\frac{0\mathrm{.}95}{k}m.$

Shafi and Alan both purchased their tickets during a sale at a per km rate of

$$\frac{0\mathrm{.}85}{k}m.$

Lynn and Jeanette both purchased their tickets during a special promotion at

a per $km$ rate of $$\frac{0\mathrm{.}65}{k}m.$

Your program will produce output in a table, formatted as shown here $($this table

does not contain all the information $-$ it is only a sample$)$: