Goals: $-$ To know how to create multiple scenes in one application and connect between them. $-$ To practice the form validation. $-$ To learn how to apply JavaFX Collections in real applications. $-$ To deal with Event Property and Listeners. $-$ To practice I$/$O file management. Prompt: Warehouse inventory management is a process that involves receiving, storing, and tracking inventory in a warehouse. For this lab we will develop simple warehouse inventory application with two screens: The first scene titled "Warehouse Inventory" is for: $-$ Registering the items to warehouse by adding: $-$ Item Name $-$ Item Category $-$ Item Quantity $-$ Item Expiry Date $-$ Updating the quantities for the item and other information The second scene titled "Search" is for: $-$ Searching about item in the system and retrieve its information $($quantity and expiry date$).-$ Filter the items by its category. The two screens should connect with each other by the buttons "Search" and "Back". $($Warehouse Inventory scene is the main screen$).$ Functionalities: Download the $($pre$-$designed interface "Warehouselnventory.Java"$)$ then add the following functionalities: Task $1$: ObservableList $-$ The Warehouselnventory scene has four ListViews to list all the items information: $-$ ListView to display the Item name $-$ ListView to display the Quantity of item. $-$ ListView to display the Item Category. $-$ ListView to display the Item Expiry Date. $-$ Those ListViews are already created in the interface but still missing the ObservableLists. $-$ Initialize the four empty ObservableLists $($obItems$,$ obQuantity $,$ obCategory, obExDate, obitemFilter$)$ then pass the: $-$ obltems to the IvItems ListView $-$ obQuantity to the lvQuantity ListView. $-$ obcategory to the lvCategory ListView. $-$ obExDate to the lVExDate ListView. $-$ obItemFilter to the IvItemsByCategory ListView. $-$ The content of the $($obItems$,$ obQuantity$\_$ obCategory and obExDate$)$ ObservableLists and its ListViews will be obtained from the TextFields, ComboBoxes and DatePicker when the user clicks on the "Add" button in the Warehouselnventory scene. $-$ The content of the $($obItemFilter$)$ ListView will be obtained by filtering the registered items according to its category using the ComboBox in the search scene. Task$2$: Event$-$Driven Programming for the "Warehouselnventory" screen: Task $2\mathrm{.}1$: Add an ActionEvent on the Add button: $-$ To add a new item, user must: $1-$ Fill the Item Name and Quantity using TextField. $2.$ Choose the Quantity unit form the ComboBox $3.$ Select the item Category from the ComboBox $4-$ Choose the Expiry Date from the DatePicker. $5.$ Click on the "Add" Button. Item name must be added directly as string to ob I tems Observablelist. inserting it to the obQuantity ObservableList. $-$ Example: if the quantity is $"100$

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and the unit is "Boxes", the quantity must be combined as $"100$ Boxes" before adding it to obQuantity ObservableList. $-$ Item category must be got from the ComboBox and added directly as string to obcategory Observablelist. $-$ The expiry date must be got from the DatePicker then added directly to obExDate ObservableList. Form Validation: $-$ If any of the TextFields are empty $->$ print in the $1$blmsg lable $"$ Enter the item name and quantity". $-$ If the quantity text field contains non$-$numeric letters $->$ print in the lblmsg lable $"$ The Quantity must be digit only $".-$ If the item name is already exist in the list. $->$ print in the $1$ blmsg lable "The item already inserted" $-$ Initialize the four empty ObservableLists $($obItems$,$ obQuantity $,$ obCategory, obExDate, obitemFilter$)$ then pass the: $-$ obltems to the IvItems ListView $-$ obQuantity to the lvQuantity ListView. $-$ obcategory to the lvCategory ListView. $-$ obExDate to the lVExDate ListView. $-$ obItemFilter to the IvItemsByCategory ListView. $-$ The content of the $($obItems$,$ obQuantity$\_$ obCategory and obExDate$)$ ObservableLists and its ListViews will be obtained from the TextFields, ComboBoxes and DatePicker when the user clicks on the "Add" button in the Warehouselnventory scene. $-$ The content of the $($obItemFilter$)$ ListView will be obtained by filtering the registered items according to its category using the ComboBox in the search scene. Task$2$: Event$-$Driven Programming for the "Warehouselnventory" screen: Task $2\mathrm{.}1$: Add an ActionEvent on the Add button: $-$ To add a new item, user must: $1-$ Fill the Item Name and Quantity using TextField. $2.$ Choose the Quantity unit form the ComboBox $3.$ Select the item Category from the ComboBox $4-$ Choose the Expiry Date from the DatePicker. $5.$ Click on the "Add" Button. Item name must be added directly as string to ob I tems Observablelist. inserting it to the obQuantity ObservableList. $-$ Example: if the quantity is $"100$

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and the unit is "Boxes", the quantity must be combined as $"100$ Boxes" before adding it to obQuantity ObservableList. $-$ Item category must be got from the ComboBox and added directly as string to obcategory Observablelist. $-$ The expiry date must be got from the DatePicker then added directly to obExDate ObservableList.