Which of the following is an example of a proper character representation in Java?

In Java, a proper character representation is defined using single quotes to encapsulate a single character. The correct answer is represented by a single character, which is the asterisk symbol '*'. This adheres to the requirement of representing a single character in Java using single quotation marks.

Options that do not conform to this standard include:

• The choice with 'example' is incorrect because it uses single quotes but contains multiple characters, which is not a valid character representation.

• The choice with "A" is incorrect as it uses double quotes instead of single quotes. In Java, double quotes are used for string literals, while single quotes are specifically for character literals.

• The choice '' shows empty single quotes, which does not represent a valid character in Java, since a character literal must consist of exactly one character enclosed in single quotes.

Thus, the only choice that correctly follows the syntax for a single character in Java is '*'.