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:

Nucleotide Sequences

The order of nucleotides in a DNA or RNA molecule that determines genetic information.

Double-stranded DNA

The normal form of DNA, consisting of two parallel strands of nucleotides wound around each other in a helix.

RNA Molecule

A nucleic acid present in all living cells. Its principal role is to act as a messenger carrying instructions from DNA for controlling the synthesis of proteins.

Ribosomes

Cellular structures that facilitate the translation of mRNA into proteins by linking amino acids together.