Something

public class Coke 
{
	public static void main (String args[])
	{
		Coke car = new Coke();
		car.dataInput();
		car.dataCalc();
		car.dataOutput();
	}

	double traveled;
	double cost;
	
	public void dataInput()
	{
		traveled = inputDouble("How far did you travel? ");
	}
	
	public void dataCalc()
	{
		if (traveled < 100)
			cost = traveled * 20;
		else
			cost = traveled * 25;
	}
	
	public void dataOutput()
	{
		output ("Your total cost is: " + cost);
	}
}