When an Application Uses Many Components, Rather Than Deriving Just

question 19

Multiple Choice

When an application uses many components, rather than deriving just one class from the JFrame class, it is often better to encapsulate smaller groups of related components and their event listeners into their own class. A commonly used technique to do this is:

• A) To extend a class from the JAbstractButton class to contain other components and their related code
• B) To extend a class from the JComponent class to contain other components and their related code
• C) To extend a class from the JPanel class to contain other components and their related code
• D) To extend a class from the JFrame class to contain other components and their related code

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Definitions:

Command

An instruction to a computer or software application to perform a specific task.

Run Button

A graphical button in software that initiates the execution of a program or query.

Close

The action to terminate an application window, document, or file.

Macro

A set of instructions or a script that automates repetitive tasks in software applications.