I need help on these java codes: $1.$ Dorm and Meal Plan Calculator

A university has the following dormitories:

$-$ Allen Hall: $\backslash$$$1,800$ per semester

$-$ Pike Hall: $\backslash$$$2,200$ per semester

$-$ Farthing Hall: $\backslash$$$2,800$ per semester

$-$ University Suites: $\backslash (\backslash$$ $3,000\backslash )$ per semester

The university also offers the following meal plans:

$-7$ meals per week: $\backslash (\backslash$$ $600\backslash )$ per semester

$-14$ meals per week: $\backslash$$$1,100$ per semester

$-$ Unlimited meals: $\backslash$$$1,800$ per semester

Create an application with two ComboBox controls. One should hold the names of the dormitories, and the other should hold the meal plans. The user should select a dormitory and a meal plan, and the application should show the total charges for the semester.

Skateboard Designer

The Skate Shop sells the skateboard products listed below.

Decks Truck Assemblies Wheels The Master Thrasher $$607\mathrm{.}75-$inch axle $$3551$mm$$20$ The Dictator $$458-$inch axle $$4055$mm$$22$ The Street King $$508\mathrm{.}5-$inch axle $$4558$mm$$2461$mm$$28$

In addition, the Skate Shop sells the following miscellaneous products:

Grip tape: $$10$ Bearings: $$30$ Riser pads: $$2$ Nuts & bolts kit: $$3$

Create an application that allows the user to select one deck, one truck assembly, and one wheel set from either ListViewcontrols or ComboBox controls. The application should also have a ListView that allows the user to select multiple miscellaneous products. The application should display the subtotal, the amount of sales tax $($at $7$ percent$),$ and the total of the order.

Conference Registration System

Create an application that calculates the registration fees for a conference. The general conference registration fee is

$$895$ per person, and student registration is $$495$ per person. There is also an optional opening night dinner with a

keynote speech for $$30$ per person. In addition, the optional preconference workshops listed below.

The application should allow the user to select the registration type, the optional opening night dinner and keynote

speech, and as many preconference workshops as desired. The total cost should be displayed.

Smartphone Packages

Cell Solutions, a cell phone provider, sells the following data plans:

$8$ gigabytes per month: $$45\mathrm{.}00$ per month

$16$ gigabytes per month: $$65\mathrm{.}00$ per month

$20$ gigabytes per month: $$99\mathrm{.}00$ per month

The provider sells the following phones. $($A $6$ percent sales tax applies to the sale of a phone.$)$

Model $100$: $$299\mathrm{.}95$

Model $110$: $$399\mathrm{.}95$

Model $200$: $$499\mathrm{.}95$

Customers may also select the following options:

Phone Replacement Insurance: $$5\mathrm{.}00$ per month

WiFi Hotspot Capability: $$10\mathrm{.}00$ per month

Write an application that displays a menu system. The menu system should allow the user to select one data plan, one phone,

and any of the options desired. As the user selects items from the menu, the application should show the prices of the items

selected.

Create an application that works like a shopping cart system for an online book store. In the book's source code $($available

at www$.$pearsonhighered.com$/$gaddis$)$ you will find a file named BookPrices.txt darr,$1.$ This file contains the names and prices of

various books, formatted in the following fashion:

I Did It Your Way, $11\mathrm{.}95$

The History of Scotland, $14\mathrm{.}50$

Learn Calculus in One Day, $29\mathrm{.}95$

Feel the Stress, $18\mathrm{.}50$

Each line in the file contains the name of a book, followed by a comma, followed by the book's retail price. When your

application begins execution, it should read the contents of the file and store the book titles in a ListView. The user should be

able to select a title from the list and add it to a "shopping cart," which is simply another ListView control. The application should

have buttons or menu items that allow the user to remove items from the shopping cart, clear the shopping cart of all selections,

and check out. When the user checks out, the application should calculate and display the subtotal of all the books in the

shopping cart, the sales tax $($which is $7$ percent of the subtotal$),$ and the total.