Question & Answer: I've got the following code in Java and need to break out the file using classes, objects, and obj…..

import java.util.Scanner;
public class GasMileage
{
int miles;
int gallons;
int tripCount;
GasMileage(int m,int g,int t)//contructor
{
miles =m;
gallons =g;
tripCount = t;
}
//object method
void ComputeMileage(int m,int g)
{
miles =m;
gallons =g;
double mileage = (double) miles / gallons;
System.out.printf(“*** Mileage for Trip #%d is %.2f miles/gallon***nn”, tripCount, mileage);
tripCount++;
}

public static void main(String[] args)
{
int miles = 1;
int gallons = 1;
Scanner input = new Scanner(System.in);
int tripCount = 1;

//Creating object…
GasMileage g = new GasMileage(miles,gallons,tripCount);

while(miles != -1 || gallons != -1)
{
System.out.println(“Enter the details for Trip #”+tripCount);
System.out.print(“Input miles travelled (or -1 to exit): “);
miles = Integer.parseInt(input.nextLine());
if(miles == -1)

{
System.out.println(“GoodBye!”);
System.exit(0);
}
else
{
if(miles < -1)
{
System.out.println(“Invalid input! Please try again.”);
continue;
}
}
System.out.print(“Input Gallons of gas consumed (or -1 to exit): “);
gallons = Integer.parseInt(input.nextLine());
if(miles != -1 || gallons != -1)
{
g.ComputeMileage(miles, gallons);//calling method from the object..
tripCount++;
}
else
{
if(gallons < -1)
{
System.out.println(“Invalid input! Please try again.”);
continue;
}
}
}
}
}

output:-

run:
Enter the details for Trip #1
Input miles travelled (or -1 to exit): 5
Input Gallons of gas consumed (or -1 to exit): 4
*** Mileage for Trip #1 is 1.25 miles/gallon***

Enter the details for Trip #2
Input miles travelled (or -1 to exit): 4
Input Gallons of gas consumed (or -1 to exit): 3
*** Mileage for Trip #2 is 1.33 miles/gallon***

Enter the details for Trip #3
Input miles travelled (or -1 to exit): -1
GoodBye!