Create a class named Invoice with field names and item number, quantity, price and total cost.  Create instance

methods that set the item name, quantity and price. Also include a displayLine() method that calculate  the total cost of the item (as price times quantity), then displays the item number, name, quantity, price, and total cost

Create a class named TestInvoice whose main method() declares  three Invoice objects. Accept as a user input (using Scanner or JOptionPane) of each Invoice field values and assign those to an instance of Invoice class (there should be three series of inputs to fill the fields of each of three Invoice instances). Display values for each Invoice objects using JOptionPane class. When doing so – format the output in orderly fashion, one invoice data in a separate line.

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