1.3-Object-Georienteerd-Programmeren
A plane with passengers
Create a program that lets you board people in an airplane. We’ve already prepared some things for you here so you don’t have to build everything from scratch. You are supposed to build the class Airplane.
The following rules apply for this program:
- An airplane has a maximum number of passengers that can be taken along and a maximum weight of luggage that can be carried.
- The number of passengers must be entered when creating an
Airplane, but may not be changed after creating an Airplane instance. - Each passenger takes a certain amount of luggage (
Baginstances) that must also be carried on the plane. Each passenger takes 0-3 bags in which this weight is distributed. It is important that the plane does not exceed the maximum weight (what it can carry). This maximum is 25 kg * the number of passengers that fits in the plane. (So with 40 passengers on the plane, a maximum of 1000 kg of luggage can be carried).
- The number of passengers must be entered when creating an
Now write the full implementation of the program, focusing on adding the following functionality:
- You must be able to locks (
lockDoors()) and open (unlockDoors()) the doors of an aircraft. Also, you should be able to query whether the doors are locked or not (hasLockedDoors()) - Next, write a method
boardPassenger(Passenger passenger)that allows you to seat a particular passenger on the plane.- Note that there may be some errors for which
IllegalStateExceptionshould be thrown.- An IllegalStateException is thrown if the plane doors are locked when you want someone to board.
- You throw an IllegalStateException if there is no more room for the passenger or if the passenger’s luggage causes the maximum weight the plane can carry to be exceeded.
- Note that there may be some errors for which
- Write the method
depart()that allows you to make the plane leave.- Again, we expect an IllegalStateException if you try to depart without the doors locked.
Testing
Manual
It is important that software is well tested, so we ask you to think about which situations you need to test. Create an overview of tests that you need tot carry out and test all these situations.
Automated
When you are done with the manual testing you can uncomment all lines in the TestApplication class and run these automatic test as well. They should all pass. If not, try to understand why the test fails and make sure to fix your code.