Sleep commands to loops in past exercisesĭrawingPanel panel = new DrawingPanel(450, Graphics g = panel.getGraphics() // drawĭrawBook(g, 20, 35) drawBook(g, 150, 70) MyBmw.takeTrip(100) // Takes away the fuel used for 100 miles using the takeTrip methodĭouble fuel_left = myBmw.Содержание презентации «Building Java Programs.ppt» Сл MyBmw.fillUp(20) // Adds 20 gallons to fillUp method Public double reportFuel() // Returns value of how much fuel is left in tankĪnd this is the Tester class: public class TesterĪutomobile myBmw = new Automobile(24) // Passes constructor argument of 24 mpg Shouldn't it do gallons = gallons - (miles driven / mpg)? For some reason, when I reference mpg, the output of Tester is '-infinity'. Gallons -= t / mpg // Not sure how to do this line. Public void takeTrip(double t) // Takes away fuel from the tank depending upon how many miles are driven Public void fillUp(double f) // Adds fuel to the tank

Public Automobile(double m) // Accepts value m to the double mpg. This is the Automobile class: public class Automobile When I leave that method out of the Tester class, it returns the correct values. I can't figure out why, other than that I've singled out the problem is in the Automobile class at line 14 in the takeTrip method. Every time I run the Tester class, it returns a value of -Infinity. The other class, Tester, is the main class.

It asks to create two classes, one is Automobile which holds the methods I will work with. I'm working on a project from the Blue Pelican Java book, lesson 16 project Gas Mileage.

Blue pelican java textbook solutions