TextBook String isbn String bookTitle String authorName |double price int availableQuantity int standard static double discountRate TextBook( ) TextBook(String isbn, String bookTitle, String authorName, double price, int availableQuantity, int standard) static void setDiscountRate(double rate) static double getDiscountRate( ) void setlsbn(String isbn) void setBookTitle(String bookTitle) void setAuthorName(String authorName) void setPrice(double price) void setAvaiableQuantity(int availableQuantity) void setStandard(int standard) String getIsbn( ) String getBookTitle( ) String getAuthorName( ) |double getPrice( ) int getAvailableQuantity( ) int getStandard() void addQuantity(int amount) void sellQuantity(int amount) void showDetails( ). Start The Start class contains the main method. Inside the main method, create two objects of StoryBook and two objects of TextBook. Demonstrate all the methods and constructors.

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