You have the following products data file: 1,name1,desc1,100,50,50,D 2,name2,desc2,50,12,W 3,name...

You have the following products data file: 1,name1,desc1,100,50,50,D 2,name2,desc2,50,12,W 3,name3,desc3,30,20,W 4,name4,desc4,80,60,55,D -------------- For each record, the following data are common: product id, product name, product description, product price For records that end with D (Dimensional), the two values before the D letter are product width and length. For records that end with W (Weighted), the value before the W letter represents the product weight. ------------ Create an abstract class named Product which contains the following attributes: product id, product name, product description and product price. and calcPay() abstract method. Create a sub class from the Product class to represents the Dimensional Product, add the following attributes: width and length. Implements the calcPay() so that it returns the result of (width * length * price). Create another sub class from the Product class to represents the Weighted Product, add the following attribute: weight. Implements the calcPay() so that it returns the result of (weight * price). -------------   
When the program run, the following choices appear: 1- Show All Products 2- Add Product 3- Delete Product 4- Edit Product 5- Calculate Total Price 6- Save data to file 7- Exit Enter your choice: --------------- Notes 1- Read the data from the file and store it in an array of type Product. 2- Add, Edit and Delete operations changing the data in the array and when you choose the 6th choice (Save data to file), the changes are stored to the file. 3- Calculate Total Price (the 5th choice), sums the result of calling calcPay() from each object in the array.   

- program this with java languge only with arrays ,inheritance,polymorphisem,exception , interfaces and abstract classes

and please make this code simple because iam a beginner in java