1) The Class class is at the top of the Java inheritance hierarchy. Select one:

Question

1)

The Class class is at the top of the Java inheritance hierarchy.

Select one:

True

False

The Class class is at the top of the Java inheritance hierarchy.

Select one:

True

False

2)

Java allows you to create polymorphic references using inheritance or using interfaces.

Select one:

True

False

3)

All classes in Java are directly or indirectly subclasses of what class?

Select one:

Wrapper

String

Reference

this

Object

None of the above

4)

Which of the following is true regarding every Java class that you create from scratch?

Select one:

Any class I write classes can have 0 or 1 parent classes and any number of child classes.

Any class I write must have 1 child class but may have any number of parent classes.

Any class I write must have 1 parent class and may have at most a single child class.

Any class I write must have 1 parent but may have any number of child classes.

Any class I write can have any number (0 or more) of parent classes and any number (0 or more) of child classes.

5)

In order to determine the actual type that a polymorphic variable refers to, the decision is made

Select one:

by the programmer at the time the program is written.

by the user at run time.

by the Java run-time environment at run time.

by the compiler at compile time.

by the operating system when the program is loaded into memory.

Explanation / Answer

3
Wrapper

1
True

5
by the operating system when the program is loaded into memory.

2

true

4

Any class I write must have 1 child class but may have any number of parent classes(not sure)

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