For this task, you need to develop a JavaFX application in NetBeans that implements a LinkedHashMap class. The Java application should consist of a graphical user interface that can be used to add elements to the LinkedHashMap. There should be two TextFields to take in the element name and number. Then there should be four buttons to do four tasks, namely: add, change, remove and show all elements in the LinkedHashMap. Your buttons should have Action methods and should make use of methods in the LinkedHashMap class. When the Add button is clicked, the element name and value should be added to the LinkedHashMap. Make use of the LinkedHashMap methods to add the elements. When the user fills in the element name and number and the Add button is clicked, a message should be displayed in an alert dialog box to the user to inform them of this If no element is specified at the time the Add button is clicked, an error message should be displayed to inform the user to enter the element
For this task, you need to develop a JavaFX application in NetBeans that implements a LinkedHashMap class. The Java application should consist of a graphical user interface that can be used to add elements to the LinkedHashMap. There should be two TextFields to take in the element name and number. Then there should be four buttons to do four tasks, namely: add, change, remove and show all elements in the LinkedHashMap.
Your buttons should have Action methods and should make use of methods in the LinkedHashMap class.
When the Add button is clicked, the element name and value should be added to the LinkedHashMap. Make use of the LinkedHashMap methods to add the elements. When the user fills in the element name and number and the Add button is clicked, a message should be displayed in an alert dialog box to the user to inform them of this
If no element is specified at the time the Add button is clicked, an error message should be displayed to inform the user to enter the element
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