Concept explainers
What happens if you try to compile the TIcketMachine class with the following version of refundBalance?
What do you know about return statements that helps to explain why this version does not compile?
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- This may make more sense if I show you a sample run of a program that implements the wizard shown above: Do you want to buy a snowboard? no Do you want to buy downhill skis? yes Have you gone skiing before? yes Are you an expert? no Buy the ZR200 model. Notice how a series of questions is asked by the wizard and answered by the shopper. When there are no more questions to be asked, the conclusion is printed by the wizard and the program exits. The series of questions asked by the wizard closely follows the rules in the flow chart. A Decision object represents a triangle in the flow cart. The Decision object asks a question and then returns either the next decision in the flow chart, or a message that should be printed before the program terminates. This is an example of the Composite design pattern because a Decision object contains other Decision objects. Here is a description of the methods in the IDecision interface: public void setYes(IDecision yes): Specifies the IDecision that…arrow_forwardImplement the design of the ECustomer class so that the following output is produced:[Your code should work for any number of products added in the setProductDetails method]# Write your codes here.print("Total E-Customer:", ECustomer.count)c1 = ECustomer("James")c1.setProductDetails("TV",35000,"Air Cooler", 9000)c2 = ECustomer("Mike")c2.setProductDetails("Mobile",20000,"Headphone",1200,"Fridge", 45000)c3 = ECustomer("Sarah")c3.setProductDetails("Headphone", 1200)print("=========================")c1.printDetail()print("=========================")c2.printDetail()print("=========================")c3.printDetail()print("=========================")print("Total E-Customer:", ECustomer.count)Output:Total E-Customer: 0=========================Name: JamesProducts: TV, Air CoolerTotal cost: 44000=========================Name: MikeProducts: Mobile, Headphone, FridgeTotal cost: 66200=========================Name: SarahProducts: HeadphoneTotal cost: 1200=========================Total E-Customer:…arrow_forwardI need to figure out how to call a method that is located in a different class. For example, I am trying to make a tax calculator that multiplies a payers income by a corporate rate. However, I cannot figure out how to call the income method. Nothing I have tried is working. Is there any chance you can guide me? I am just trying to make this equation work. Is there something else that is stopping this from working?arrow_forward
- Hi, I am making a elevator simulation and I need help in making the elevator classes using polymorphism on the comments that says logic. Any help is appreciated. There are 4 types of elevators in the system:StandardElevator: This is the most common type of elevator and has a request percentage of 70%. Standard elevators have a maximum capacity of 10 passengers.ExpressElevator: This type of elevator has a request percentage of 20%. Express elevators have a maximum capacity of 8 passengers and are faster than standard elevators.FreightElevator: This type of elevator has a request percentage of 5%. Freight elevators have a maximum capacity of 5 passengers and are designed to transport heavy items.GlassElevator: This type of elevator has a request percentage of 5%. Glass elevators have a maximum capacity of 6 passengers and are designed to transport fragile item This what i have so far // Elevator abstract classpublic abstract class Elevator { protected String type; protected int…arrow_forwardI need help with my assignment in my Java programing class. I have already created the "Monkey" class (#5) but need help in creating a loop (#6) as I struggle with loops since they are not clicking. Please see the picture for the criteria on the loop. Attached is also a picture of the first page of the driver class.arrow_forwardWrite a void method which will print out a sentence “Hello World!”. Call the method from main().arrow_forward
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- Hi, I am making a elevator simulation and I need help in making the passenger classes using polymorphism, I am not sure what to implement in the comment that says logic. Any help is appreciated. There are 4 types of passengers in the system:Standard: This is the most common type of passenger and has a request percentage of 70%. Standard passengers have no special requirements.VIP: This type of passenger has a request percentage of 10%. VIP passengers are given priority and are more likely to be picked up by express elevators.Freight: This type of passenger has a request percentage of 15%. Freight passengers have large items that need to be transported and are more likely to be picked up by freight elevators.Glass: This type of passenger has a request percentage of 5%. Glass passengers have fragile items that need to be transported and are more likely to be picked up by glass elevators. This is what i have so far public abstract class Passenger { protected String type; protected int…arrow_forwardcreate java method to count the number of employees and their salary ranges according to your assumptions. You can think about any assumption . Create main class to call the methodarrow_forwardIn this assignment, you will implement part of a bigger program that deals with jewelry. You must submit the full implementation for the following interface: public interface JewelryBagInterface { public boolean addJewelryItem(int id, Jewelry j, double weight); public boolean removeJewelryItem(int id); public double getTotalWeight (); public double getTotalPrice (); public double getTotalGoldWeight (); public double getTotalSilverWeight (); public double getTotalBronzeWeight (); public void printBagContents(); public void setMaximumWeight (double max_weight); public void removeAllGoldItems(); public void removeAllsilverItems (); public void removeAllBronzeItems (); public int getTotalNumberOfitems(); public int getTotalNumberOfGoldItems (); public int getTotalNumberOfSilverItems (); public int getTotalNumberOfBronzeItems (); The interface JewelryBag java is available on Moodle (including the method descriptions). In your Java program, define the following enumerated type: Public enum…arrow_forward
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