Starting Out with Java: From Control Structures through Objects (7th Edition) (What's New in Computer Science)
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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
Expert Solution & Answer
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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.

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Chapter 13 Solutions

Starting Out with Java: From Control Structures through Objects (7th Edition) (What's New in Computer Science)

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