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31. Car is a class program. Car has a no-args/empty constructor and an overloaded constructor that accepts the year, make, and model and stores each in their respective fields (class-levell variables) of the same name. It has a carsBought method that returns the number purchased for that specific year, make, and model through a prompt. Also code a method called objectState that returns the formatted output for the fields according to the specs below. points) FORMATTED OUTPUT SPECS: Year, Make, & Model: 9999 Xxxxxxxxxx Xxxxxxxxxx
Expert Answer
Explanation::
- Below both file code are present i.e Car.java and TestCar.java
- Comments are prsent in codes for better understanding.
Code for Car.java ::
import java.util.*;
public class Car{
/* Following are class instance variables*/
int year;
String make,model;
Car(){
/*This is default constructor*/
}
Car(int newyear,String newMake,String newModel){
/* This is parameterized constructor also called as overloaded constructor*/
year=newyear;
make=newMake;
model=newModel;
}
int carsBought(){
Scanner sc=new Scanner(System.in);
System.out.print(“Enter cars bought for year “+year+” ::”);
return sc.nextInt();
}
String objectStat(){
String s=”Year, Make, & Model: “;
String p=Integer.toString(year);
return s+p+” “+make+” “+model;
}
}
Code for TestCar.java::
import java.util.*;
public class TestCar{
public static void main(String args[]){
/*
* Creating two objects of car named c1 and c2 with given arguments
*/
Car c1=new Car(1955,”Ford”,”Thunderbird”);
Car c2=new Car(1984,”Aston Martin Series 2″,”DB4″);
/*For both objects methods are called from class car.
* carsBought method prompts for user input.
*/
int carType1=c1.carsBought();
String s1=c1.objectStat();
System.out.println(s1);
System.out.println(“Number Purchased: “+carType1);
System.out.println();
System.out.println();
int carType2=c2.carsBought();
String s2=c2.objectStat();
System.out.println(s2);
System.out.println(“Number Purchased: “+carType2);
}
}
Output::
