Consider the Abstract Class Below

question 50

Multiple Choice

Consider the abstract class 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) Will not be able to instantiate an object of class Foo.
• D) All of the above.

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Definitions:

Periodic Table

A tabular arrangement of chemical elements organized by increasing atomic number, where elements with similar properties are grouped in columns.

Sulfides

Chemical compounds that contain sulfur in the negative oxidation state, often associated with mineral deposits and pollution.

Periodic Table

A tabular arrangement of chemical elements, ordered by their atomic number, electron configuration, and recurring chemical properties.

Nonmetals

Elements that lack metallic properties and are typically poor conductors of heat and electricity.