Help with range method!

[MrHuggykins]

First Class------------------

// Car class to define all the methods/classes in CarUser
public class Car {
// Creates object Car
public Car()
{

}
// Let's a car have initial gas in the tank
public Car (double initialGas)
{
gas = initialGas;
}
// method to add gas to the car
public void addGas(double addGas)
{
double newaddGas = gas + addGas;
addGas = newaddGas;
}
public void drive(double drive)
{
double newdrive = (drive/car) - gas;
drive = newdrive;
}
public double range(double range)
{ double newrange = gas * car;
range = newrange;
return range;
}
private double gas = 3.5;
private double car = 0;



}



Second Class-
public class CarUser
{

/**
* Constructor for objects of class CarUser
*/
public CarUser()
{
Car honda = new Car(30.0); // 30 miles per gallon

honda.addGas(10 .0); // add 10 more gallons
honda.drive(250 .0); // drive 250 miles

// print range remaining
System.out.prin tln("Honda range remaining: " + honda.range());

Car toyota = new Car(20.0); // 20 miles per gallon

toyota.addGas(1 8); //add 18 more gallons
toyota.drive(20 0.0); //drive 200 miles

// print range remaining
System.out.prin tln("Toyota range reining:" + toyota.range()) ;

}

}
----------

[r035198x]

1.) Please use code tags when posting code.
2.) What is the question?

[JosAH]

You have to get your dimensions right: if 30 means 30 miles per gallon then 10
can't mean 'add 10 more gallons'.

kind regards,

Jos

[MrHuggykins]

You have to get your dimensions right: if 30 means 30 miles per gallon then 10
can't mean 'add 10 more gallons'.

kind regards,

Jos

Why not.. that means you're adding 300 miles to the tank.

[r035198x]

I'm still wating to hear what the question is here.

In the meantime, here is a rather useless method.
[CODE=java] public void addGas(double addGas)
{
double newaddGas = gas + addGas;
addGas = newaddGas;
}[/CODE]

[JosAH]

Why not.. that means you're adding 300 miles to the tank.

Not the way you do it; as I wrote: check the dimensions of those numbers: gallons,
miles or miles per gallon.

kind regards,

Jos

[MrHuggykins]

I don't have a question... I need help I don't know java at all. Do they all need to be the same dimension?

[Nepomuk]

I don't have a question... I need help I don't know java at all. Do they all need to be the same dimension?

If you need help, then tell us, what your problem is EXACTLY. We won't go through your code if we don't even know, what the problem is.
You could start with explaining, what your program should do, what it does do and what you're trying to archive at the moment.

Considering the dimension issue, just try writing it down. Something like

10 miles + 5 gallons

doesn't make any sense in real life, does it? So why should it make sense for the computer? It's the same as dividing apples through pears, as one of my teacher used to say.

Greetings,
Nepomuk