Rather implement a single package$/$class

using inheritance to allow multiple data types$/$objects in a heterogeneous list. Use this

package$/$class to implement a doubly linked list and process all $$B$$ Option

transactions placing the cars and planes in a single list $($container$).$ Hint: Car and

Plane should inherit from a single ancestor. The links in the following diagram

will actually connect ancestor nodes. $[$I would be impressed if you allowed planes to

have $$propeller$$ or $$jet$$ engines. Do not specify the engine type for cars! If you do this, you do

not have to use tasking $($multi$-$threading or other means provided by your selection of

languages$).$ I would be even more impressed if you do both!!!!!!! $]$

type InventoryItem is record

itemName: ItemType; unitPrice: Float; inStock: Integer;

end InventoryItem;

IF Ford $80722\mathrm{.}364$

IF Ford $354622$

IR Boeing $1567342\mathrm{.}783$

IR Cessna $569574$

PF

PL

D Ford

IR GMC $67988\mathrm{.}992$

IR RAM $88572\mathrm{.}463$

IF Chevy $53476\mathrm{.}343$

PN

PF

$5$

$($In java please$)$