Chapter 12.5, Problem 12.27CP

Explanation of Solution

ComboBox Controls:

• It is used to present a list of items in a drop-down list.
  • User may select an item from a given list of items.
• Create a “ComboBox” control using the “ComboBox” class.
  • It is present in the “javafx.scene.control” package.
• The “ComboBox” class contains a method “setEditable()”.
  • This method contains an argument, which takes a “boolean” value.
  • If the user passes “true” in the argument, then the “ComboBox” will be editable.
  • If the user passes “false” in the argument, then the “ComboBox” will be uneditable.

Example:

The example for “ComboBox” controls is shown below:

//create a ComboBox named countryComboBox

ComboBox<String> countryComboBox = new ComboBox<>();

//add the fruit items to ComboBox control

countryComboBox.getItems().addAll("Africa", "Australia", "India", "China");

• From the example “countryComboBox” is a “ComboBox” control and next line code adds the items into a ComboBox control using “getItems().addAll()” method.

Difference between an editable “ComboBox” and an uneditable “ComboBox”:

Editable ComboBox	Uneditable ComboBox
This “ComboBox” allows the user to select an item from a drop-down list or the user is able to type input into a control...