8.2 (The Stock class) Following the example of the Circle class in Section 8.2, design a class named Stock that contains: ■ A string data field named symbol for the stock’s symbol. ■ A string data field named name for the stock’s name. ■ A double data field named previousClosingPrice that stores the stock price for the previous day. ■ A double data field named currentPrice that stores the stock price for the current time. ■ A constructor that creates a stock with the specified symbol, name, previousClosingPrice, and currentPrice. ■ A method named getChangePercent() that returns the percentage changed from previousClosingPrice to currentPrice. The formula to be used is (currentPrice - previousClosingPrice) / previousClosingPrice. Draw the UML diagram for the class and then implement the class (write the code for the class). Write a test program (application) in which you create a Stock object stock1 with the stock symbol ORCL, the name Oracle Corporation, the previous closing price 34.5, and the new current price 34.35. The program should display the price-change percentage of stock1. Create another Stock object stock2 with the values of the four data fields read from the user and display its price-change percentage
OOPs
In today's technology-driven world, computer programming skills are in high demand. The object-oriented programming (OOP) approach is very much useful while designing and maintaining software programs. Object-oriented programming (OOP) is a basic programming paradigm that almost every developer has used at some stage in their career.
Constructor
The easiest way to think of a constructor in object-oriented programming (OOP) languages is:
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8.2 (The Stock class) Following the example of the Circle class in Section 8.2, design a class named Stock that contains:
■ A string data field named symbol for the stock’s symbol.
■ A string data field named name for the stock’s name.
■ A double data field named previousClosingPrice that stores the stock price for the previous day.
■ A double data field named currentPrice that stores the stock price for the current time.
■ A constructor that creates a stock with the specified symbol, name, previousClosingPrice, and currentPrice.
■ A method named getChangePercent() that returns the percentage changed from previousClosingPrice to currentPrice. The formula to be used is (currentPrice - previousClosingPrice) / previousClosingPrice.
Draw the UML diagram for the class and then implement the class (write the code for the class).
Write a test program (application) in which you create a Stock object stock1 with the stock symbol ORCL, the name Oracle Corporation, the previous closing price 34.5, and the new current price 34.35. The program should display the price-change percentage of stock1. Create another Stock object stock2 with the values of the four data fields read from the user and display its price-change percentage.
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