Question

please help ASAP me with this JAVA program! and please do correct INDENTATION with NO COMMENTS! thank you!

Using enum and array of objects

Use the enumerated type of: enum CarType { PORCHE, FERRARI, JAGUAR, UNKNOWN }

And place it in its own file. Then make a Car class that has the following:

            Make of CarType

            Year, string or integer

            Mileage of integer

Place in its own file like so:

            porche

            2010

            51119

            ferrari

            2014

            9182

            porche

            2015

            3987

            jaguar

            2011

            65123

Create a program that will have an array of four cars of Car class. Have it use a while loop to read in the information per car (use the enhanced switch to convert the string of the make into CarType – don’t forget about the phantom newline), allocate each Car object and put the information into that object. Then have a for loop go through the array, print the Car objects, and total the mileage. After the for loop ends, print the average mileage.

Sample run:

            Honest George’s Used Sports Cars

            Car 1 is a 2010 FERRARI with 51119 miles on it

            Car 2 is a 2014 JAGUAR with 9182 miles on it

            …

            Average mileage is 32352.8

Answer 1

/*
* The java program that demonstrates
* the Car class creating an array of Car
* type of size,4 . Then set create four Car objects
* and print the four-car objects and then average mileage
* */
//CarTester.java
public class CarTester
{
   public static void main(String[] args)
   {
       final int size=4;
       double totalmileage=0;
       //create an array of Car
       Car[] cars=new Car[size];
      
       //create four Car objects
       cars[0]=new Car("porche", 2010, 51119);
       cars[1]=new Car("ferrari", 2014, 9182);
       cars[2]=new Car("porche", 2015, 3987);
       cars[3]=new Car("jaguar", 2011, 65123);
       System.out.println("\tHonest George’s Used Sports Cars");
       //print the cars
       for (int idx = 0; idx < cars.length; idx++) {
           System.out.println("Car "+(idx+1)+" is a "+cars[idx].toString());
           totalmileage+=cars[idx].getMileage();
       }
       //display average mileage
       System.out.printf("Average mileage is %.1f",totalmileage/cars.length);
   }
} //end of class

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//Car.java
public class Car
{
   //declare instance variable
   private CarType make; //CarType
   private int year;
   int mileage;
   /*constructor*/
   public Car(String type, int year, int mileage)
   {
       this.year=year;
       this.mileage=mileage;
       //set make using type
       switch (type) {
       case "porche":
           make=CarType.PORCHE;
           break;
       case "ferrari":
           make=CarType.FERRARI;
           break;
       case "jaguar":
           make=CarType.FERRARI;
           break;
       }
   }
   //Override
   public String toString() {  
       return String.format("%d %s with %d miles on it",
               year,make,mileage);
   }
   //Get mileage value
   public int getMileage() {
       return mileage;
   }
   public void setMileage(int mileage) {
       this.mileage = mileage;
   }
} //end of the class Car
----------------------------------------------------------------------------------------------------------------------------------------

//CarType.java
enum CarType { PORCHE, FERRARI, JAGUAR, UNKNOWN }

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Sample Output: