Create a Java program for managing a grocery store's inventory system. The inventory information is stored in a text file named "grocery_inventory.txt." Each line in the file represents a grocery item with the following format: "ItemID, ItemName, Quantity, PricePerUnit." The program should allow the user to add new items, update the quantity of existing items, and display the total value of the inventory. Ensure that the program checks for the existence of "grocery_inventory.txt" and handles cases where the file is empty. Utilize functions to organize your code effectively, with comments explaining each function's purpose. You can use data structures like HashMap or ArrayList to store and manipulate inventory data. The program should output the updated inventory information to a file named "updated_grocery_inventory.txt." Ex: grocery_inventory.txt: 301, Apples, 50, 1.99 302, Bread, 40, 2.50 303, Milk, 30, 3.99 (updated_grocery_inventory.txt after adding 20 units of Eggs and updating the quantity of Apples to 60) 301, Apples, 60, 1.99 302, Bread, 40, 2.50 303, Milk, 30, 3.99 304, Eggs, 20, 2.25.

Identity theft, in which people steal other people's personal information, is still a big source of worry for both individuals and businesses. Let's pretend you're a database administrator for a large company with extensive online databases. What do you do? Are there any measures you'd take to prevent unauthorised access to a company's database?

Is it ethical for companies to collect and sell information about their customers? a) If it is ethical, are there any limits to how that data can be used, and why? b) If it isn't ethical, what limits can be ethically imposed by the government?

How do we ensure that the information we're using is accurate?

If you're going to talk about data manipulation, forgeries, and online jacking, you may as well provide some examples.

Why are telephone interviews more effective than other techniques of information gathering?

How do we ensure that the information we're using is accurate?