simple abd brief please Test 3(20 points) Classes and Objects. Design a class named Stock. The class contains: - (3 points)A string data field named name for the stock's name. - (4 points)Double data fields named previousClosingPrice and currentPrice (4 points)A default constructor. (4 points)Overload constructor that creates a stock with the specified name (5 points)A method named getChangePercent() that returns the percentage changed from previousClosingPrice to currentPrice..