3.Build a Transaction class that will store information about the items being purchased in a single transaction. It should include a customerID and customerName. It should also include an ArrayList to hold information about each item that the customer is purchasing as part of the transaction.

Note: You must use an ArrayList, not an array.

4. Build a TransactionTest class to test the application. The test class should not require any interaction with the user. It should verify the correct operation of the constructor and all methods in the Transaction class.