Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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- StockList Class • This class will contain the methods necessary to display various information about the stock data. • This class shall be a subclass of ArrayList. • This class shall not contain any data fields. (You don't need them for this class if done correctly). • This class shall have a default constructor with no parameters. o No other constructors are allowed. • This class shall have the following public, non-static, methods: • printAllStocks: This method shall take no parameters and return nothing. ▪ This method should print each stock in the StockList to an output file. ▪ NOTE: This method shall NOT print the data to the console. The output file shall be called all_stock_data.txt. The data should be printed in a nice and easy to read format. o displayFirstTenStocks: This method shall take no parameters and return nothing. ▪ This method should display only the first 10 stocks in the StockList in a nice and easy to read format. ▪ This method should display the data in the…arrow_forwardCar Class Project The car classwill havethe following attributes: •year: an integer that holds the car's model year •model: a string that holds the make of the car •make: a string that holds the model of the car •speed: an integer that holds the car's current speed Your class should contain thefollowing: A docstring that briefly describes the class and lists the attributes. The docstring will serve as the documentation for your class. •A constructor (__init__ method) that takes the car's year model and make as optional arguments. The constructor will set the value of the speed attribute to 0.•An __str__ method that returns the car's year model and makein a string. •To test your class, create acar object and use the print function to verify that the constructor and __str__ methodsare working correctly. •An accessor method which returns the value stored in the speed instance variable. Call this method getSpeed(). •A modifier method called accelerate() which adds 5 to the speed variable…arrow_forwardclass Book: book_belongs_to = 'Schulich School of Engineering' def _init_(self, pages = 0, title = 'Unknown', author = 'Unknown', isbn = self.pages = pages self.title = title e): self.author = author self.isbn = isbn book1 = Book(255, 'Black Beauty', 'Anna Sewell', 9780001840423) book2 = Book(208, 'The Chrysalids', 'John Wyndham', 9780140013085) Book.book_belongs_to = 'Emily Marasco' book3 = Book()arrow_forward
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