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.