Problem 2. Vehicles Extension - Polymorphism Java OOP

Здравейте колеги! Мога ли да помоля, ако на някой му се намира малко време да ми погледне кода, че нещо май не мога да схвана условието на тази задача, а не изглежда трудна? Благодаря предварително!


Това е условието:

Use your solution of the previous task for starting point and add more functionality. Add new vehicle – Bus. Now every vehicle has tank capacity and fuel quantity cannot fall (set) below 0 (If fuel quantity become less than 0 print on the console "Fuel must be a positive number").

The vehicles cannot be filled with fuel more than their tank capacity. If you try to put more fuel in the tank than the available space, print on the console "Cannot fit fuel in tank" and do not add any fuel in vehicles tank.

Add new command for the bus. The bus can drive with or without people. If the bus is driving with people, the air-conditioner is turned on and its fuel consumption per kilometer is increased with 1.4 liters. If there are no people in the bus when driving the air-conditioner is turned off and does not increase the fuel consumption.


  • On the first three lines you will receive information about the vehicles in format:

Vehicle {initial fuel quantity} {liters per km} {tank capacity}

  • On fourth line - number of commands N that will be given on the next N lines
  • On the next N lines – commands in format
    • Drive Car {distance}
    • Drive Truck {distance}
    • Drive Bus {distance}
    • DriveEmpty Bus {distance}
    • Refuel Car {liters}
    • Refuel Truck {liters}
    • Refuel Bus {liters}


  • After each Drive command print whether the Car/Truck was able to travel given distance in format if it’s successful:

"Car/Truck/Bus travelled {distance} km"

  • Or if it is not:

"Car/Truck/Bus needs refueling"

  • If given fuel is ≤ 0 print "Fuel must be a positive number".
  • If given fuel cannot fit in car or bus tank print "Cannot fit fuel in tank"



  • Finally print the remaining fuel for car, truck and bus rounded 2 digits after floating point in format:

"Car: {liters}

Truck: {liters}

Bus: {liters}"




Car 80 0.04 70

Truck 100 0.5 300

Bus 40 0.3 150


Refuel Car -10

Refuel Truck 0

Refuel Car 10

Refuel Car 300

Drive Bus 10

Refuel Bus 1000

DriveEmpty Bus 100

Refuel Truck 1000

Fuel must be a positive number

Fuel must be a positive number

Cannot fit fuel in tank

Bus travelled 10 km

Cannot fit fuel in tank

Bus needs refueling

Cannot fit fuel in tank

Car: 40.00

Truck: 100.00

Bus: 23.00

Ето и линк към Judge: 

Това е моя код: - Main. - Vehicle class. - Car class. - Bus class. - Truck class.