Chapter 13, Problem 1MC

When a selector name starts with a period in a JavaFX CSS style definition, it means the selector corresponds to _______.

1. a. specific variable names in the application
2. b. specific types of JavaFX nodes
3. c. values that the user enters
4. d. named constants in the application

Program Description Answer

When a selector name begins with a period in a JavaFX CSS style definition, the selector corresponds to “specific types of JavaFX nodes”.

Hence, the correct answer is option “B”.

Explanation of Solution

Type Selector Names:

• The selector names, which are starting with a period is type selector.
  • Type selector is corresponding to a particular type of JavaFX nodes.
• These names are identical to the JavaFX class names to which they correspond.
• For example
  • If the class name is “Button” then the corresponding type selector is “.button”.
  • If the class name is “CheckBox”, then the corresponding type selector is “.check-box”.

Explanation for incorrect options:

a. specific variable names in the application:

It is not a valid one and it is not corresponds to specific names in the JavaFX CSS style definition.

Hence, the option “A” is wrong.

c. values that the user enters:

It is not a valid one and it is not corresponds to user entered values in JavaFX CSS style definition.

Hence, the option “C” is wrong.

d. named constants in the application:

It is not a valid one and it is not corresponds to named constant in JavaFX CSS style definition.

Hence, the option “D” is wrong.