Web hosting domains - 134 Chapter 5 Figure 5.6 Output of the
134 Chapter 5 Figure 5.6 Output of the ThisDemo program. Lab 5.1: Simulating an Elevator In this lab, you will write an Elevator class containing various methods. Then, you will write a program that creates Elevator objects and invokes the various methods. The purpose of the lab is to help you understand how to write methods and how methods manipulate the data of an object. 1. Using your text editor, write a class named Elevator. Add fields for the following attributes: an int for the current floor, an int for the floor that the elevator is heading to, a boolean to denote whether the elevator is going up or down once it reaches its destination, and a boolean to denote whether the elevator doors are open or closed. 2. Add a method named goToFloor() that changes the floor that the elevator is heading to. Use the System.out.println() method to display a message that you are changing the value. 3. Add methods named openDoors() and closeDoors() that change the appropriate boolean field accordingly. Again, display a message within each method so that you can see when the methods are invoked. 4. Add methods named goingUp() and goingDown() that change the appropriate boolean field accordingly. 5. Save and compile your Elevator class. 6. Write a class named ElevatorProgram that contains main(). 7. Within main(), instantiate two Elevator objects. Invoke the various methods of the Elevator class on these two objects, ensuring that all your Elevator methods work successfully.
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