Practice Exercise 8.2 (The Stock class) Following the example of the Circle class in Section 8.2, design a class named Stock that contains: I 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 stockl. 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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