Consider the Abstract Superclass Below

question 14

Multiple Choice

Consider the abstract superclass below:
Public abstract class Foo
{
Private int a;
Public int b;
Public Foo(int aVal, int bVal)
{
A = aVal;
B = bVal;
}
Public abstract int calculate() ;
}
Any concrete subclass that extends class Foo:

• A) Must implement a method called calculate.
• B) Will not be able to access the instance variable A.
• C) Neither (a) nor (b).
• D) Both (a) and (b).

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Definitions:

Falsifiability

A principle that for a theory to be considered scientific, it must be able to be proven false under potential observations or experiments.

Hypothesis

A proposed explanation made on the basis of limited evidence as a starting point for further investigation.

Manipulates

Handles or controls in a skillful manner, often with the implication of unfairness or deceit.

Single-Blind Study

An experiment in which participants do not know whether they are in an experimental or a control group.