Java DVD Inventory Program - need to modify GUI to include more buttons and store items in dat file

Inventory Program Version 3

• Modify the Inventory Program to include an Add button, a Delete
button, and a Modify button on the GUI. These buttons should allow the
user to perform the corresponding actions on the item name, the number
of units in stock, and the price of each unit. An item added to the
inventory should have an item number one more than the previous last
item.

• Add a Save button to the GUI that saves the inventory to a
C:\data\inventory.dat file.

• Use exception handling to create the directory and file if
necessary.

• Add a search button to the GUI that allows the user to search for an
item in the inventory by the product name. If the product is not found,
the GUI should display an appropriate message. If the product is found,
the GUI should display that product’s information in the GUI.

Please see example below.

When for the first time the program is run, the data is automatically
loaded with the array of data that is hard coded in the program. In this
example there are 4 items. The user has the option of loading the data
saved in the “inventory.dat� by clicking on “load file� (To save
the data in the “inventory.dat� file, click on “Save� before
exiting the program).

Notice that all the fields are not editable. In this example the same 4
items are stored in the array.

Click on “First� to display the first item. Notice that all the
fields are still not editable. They are for viewing only.

Click on “Add� to add an item. Notice that the Item ID, Name,
Rating, # in Stock and Price fields are editable to allow the user to
enter the data. Also the Add button is changed to “Click to Add!�
The Index shows 4, which is the next index (i.e. the array will have 5
items).

The user can enter the data to be added.

After entering the data, the user clicks on “click to Add!� to add.
The button is then changed back to “Add.�

Now the user wants to modify the item just entered. He clicks on
“Modify.� The button is changed to “Click to Modify!� and only
the allowed fields are editable as shown below.

After making the changes, click on “Click to Modify!� The button is
changed back to “Modify.�

Click on “First� to display the first item. Click on “Search� to
look for a name. The button is changed to ‘Go!� The name field is
editable.

The name is entered, and “GO!� is clicked.

The item is found.

Click on ‘Search� again for a different name.

The name is not found.

Click on “OK� returns to the display of the item that was there with
the Name field not to be editable.

Click on “Previous� to get the previous item (Index #3). Click on
“Delete� to delete the current item.

The item is deleted and the array has only 4 items. The last item is now
displayed.

Click on “Save� to save the data in a file “inventory.dat�.