Java Implementation - Needed Asap in an hour.

import java.util.*;

/**

* A class representing a auto shop that has an owner .

* A auto shop owns a collection (or possibly collections) of vehicles,

* but does not own the vehicles themselves . In other words,

* the auto shop and its collection of vehicles form a composition .

*

*

* Only the owner of the auto shop is able to sell

* vehicles

* from the auto shop. The auto shop does NOT own its owner .

* In other words, the auto shop and its owner form an

* aggregation .

*

*/

public class AutoShop {

/*

* YOU NEED A FIELD HERE TO HOLD THE Vehicle OF THIS AutoShop

*/

/**

* Initializes this auto shop so that it has the specified owner

* and no vehicles.

*

* @param owner

* the owner of this auto shop

*/

public AutoShop (ShopOwner owner) {

// COMPLETE THIS

}

/**

* Initializes this auto shop by copying another auto shop. This auto shop

* will have the same owner and the same number and type of vehicles as

* the other auto shop.

*

* @param other

* the auto shop to copy

*/

public AutoShop(AutoShop other) {

// COMPLETE THIS

}

/**

* Returns the owner of this auto shop.

*

*

* This method is present only for testing purposes. Returning

* the owner of this auto shop allows any user to sell vehicles

* from the auto shop (because any user can get the owner

* of this auto shop)!

*

* @return the owner of this auto shop

*/

public ShopOwner getOwner() {

// ALREADY IMPLEMENTED; DO NOT MODIFY

return this.owner;

}

/**

* Allows the current owner of this auto shop to give this

* auto shop to a new owner.

*

* @param currentOwner the current owner of this auto shop

* @param newOwner the new owner of this auto shop

* @throws IllegalArgumentException if currentOwner is not the

* current owner of this auto shop

*/

public void changeOwner(ShopOwner currentOwner, ShopOwner newOwner) {

// COMPLETE THIS

}

/**

* Adds the specified vehicles to this auto shop.

*

* @param vehicles

* a list of vehicles to add to this auto shop

*/

public void add(List vehicles) {

// COMPLETE THIS

}

/**

* Returns true if this auto shop contains

* the specified vehicle, and false

* otherwise.

*

* @param vehicle

* a vehicle

* @return true if this auto shop contains the specified vehicle,

* and false otherwise

*/

public boolean contains(Vehicle vehicle) {

// COMPLETE THIS

}

/**

* Allows the owner of this auto shop to sell a single vehicle

* equal to the specified vehicle from this auto shop.

*

*

* If the specified user is not equal to the owner of this auto shop,

* then the vehicle is not sold from this auto shop,

* and null is returned.

*

* @param user

* the person trying to sell the vehicle

* @param vehicle

* a vehicle

* @return a vehicle equal to the specified vehicle from this auto shop,

* or null if user is not the owner of this auto shop

* @pre. the auto shop contains a vehicle equal to the specified vehicle

*/

public Vehicle sellingsingleVehicle(ShopOwner user, Vehicle vehicle) {

// COMPLETE THIS

}

/**

* Allows the owner of this auto shop to sell

* the smallest number of vehicles whose total price value in dollars

* is equal or less than to the specified price value in dollars.

*

*

* Returns the empty list if the specified user is not equal to

* the owner of this auto shop.

*

* @param user

* the person trying to sell vehicles from this auto shop

* @param pricevalue

* a value in dollars

* @return the smallest number of vehicles whose total price value

* in dollars is equal to the specified value in dollars

* from this auto shop

* @pre. the auto shop contains a group of vehicles whose total price value is equal

* to specified value

*/

public List sellingVehicles(ShopOwner user, int pricevalue) {

// COMPLETE THIS

}

/**

* Returns a deep copy of the vehicles in this auto shop.

* The returned list

* has its vehicles in sorted order

* (from smallest price value to largest price value).

*

Remember that

* the auto shop and its collection of vehicles form a composition.

*

* @return a deep copy of the vehicles in this auto shop sorted by price value

*/

public List deepCopy() {

// COMPLETE THIS

}

/**

* Returns a Shallow copy of the vehicles in this auto shop.

* The returned list

* has its vehicles in sorted order

* (from smallest year of make value to largest year of make value).

*

Remember that

* the auto shop and its collection of vehicles form a composition.

*

* @return a show copy of the vehicles in this auto shop sorted by year of make

*/

public List shallowCopySortedbyYear() {

// COMPLETE THIS

}

/**

* Returns a deep copy of the vehicles in this auto shop.

* The returned list

* has its vehicles in sorted based on make and then ordered based on price value.

*

* (i.e., from smallest price value to largest price value).

*

Remember that

* the auto shop and its collection of vehicles form a composition.

*

* @return a deep copy of the vehicles in this auto shop sorted

* based on make and then ordered based on price value.

*/

public List deepCopySortedbyMakePrice() {

// COMPLETE THIS

}

}