
Big Java, Binder Ready Version: Early Objects
6th Edition
ISBN: 9781119056447
Author: Cay S. Horstmann
Publisher: WILEY
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Chapter 8, Problem 4PP
Program Plan Intro
To simulate a car sharing system
Program plan:
- In the file “Passenger.java”, import necessary packages, and create a class “Passenger”,
- Declare necessary variables.
- Define the constructor.
- Define the method “getDestination()” to get the destination.
- Define the method “toString()” to return the formatted string.
- In the file “Simulation.java”, import necessary packages, and create a class “Simulation”,
- Declare Random object.
- Declare necessary variables.
- Define the constructor to construct a simulation using a given generator.
- Define the method to “addCar()” add the car into array list.
- Define the method “getFares()” to get fares.
- Define the method “getMilesDriven()” to get miles driven.
- Define the method “loadPassengers()” to pick up passengers from a station.
- Define the method “driveAllCars()” to drive all the cars to their destination.
- Define the method “loadRandomScenario()” to load a scenario into the simulator.
- Define the method “getRevenuePerMile()” to calculate the revenue per mile.
- In the file “Car.java”, import necessary packages, and create a class “Car”,
- Declare necessary variables.
- Define the constructor.
- Define the accessor methods.
- Define a method “drive()” to drive to the next station.
- Define a method “dropOff()” to drop off any passengers who have arrived.
- Define a method “add()” to add a passenger if there is room.
- Define a method “toString()” to get the formatted string.
- In the file “Station.java”, import necessary packages, and create a class “Station”,
- Create an “ArrayList” to hold people.
- Define the constructor.
- Define the method “getNumber()” to get the station number.
- Define the method “add()” to add the passenger to the list.
- Define the method “hasPeopleWaiting()” to know whether people are waiting.
- Define the method “get()” to get the passenger at the given index.
- Define the method “remove()” to remove the passenger at the specified index.
- Define the method “peopleWaiting()” to know whether a person is waiting.
- Define the method “toString()” to get the formatted string.
- In the file “SimulationTester.java”, import necessary packages, and create a class “SimulationTester”,
- Define the method “main()” to run the simulation 1000 times,
- Initialize necessary variables.
- Loop through “1000” times,
- Create an object for “Simulation”.
- Call the method “loadRandomScenario()” with “30” stations as argument.
- Call the method “driveAllCars()”.
- Update the revenue per mile value.
- Divide revenue per mil value by number of runs.
- Print actual and expected output.
- Define the method “main()” to run the simulation 1000 times,
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Chapter 8 Solutions
Big Java, Binder Ready Version: Early Objects
Ch. 8.1 -
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