Midterm 2 Review Questions

Clear is a Parameter Mode that resets the parameter to an initial value

True

False

Select all of the following that are parameter modes

Clears

Clear

Replaces

New Instance

Restores

Updates

If C Extends B, and B Implements A, You can say that:

C Extends A

C Implements A

A is a derived Interface of C

C is a base class of A

The italic underlined piece of the following code:

NaturalNumber n = new NaturalNumber2();

Is the declared type of n

Is the static type of n

Is the object type of n

Is the interface type of n

In polymorphism the method that gets called depends on...

which class calls it

the dynamic type of the reciever

which method was made last

the static type of the recieiver

All methods that use polymorphism are instance methods

True

False

Interfaces can contain constructors

True

False

Which command calls the method body in the class above the current one?

super()

top()

getPrevious()

useExtended()

Aliasing is always bad

True, by using aliasing on mutable types it can cause unintended consequences outside the method call

False, aliasing can be good when used on mutable reference types to be able to change the object value on method call

Which parameter mode(s) implementation does NOT depend on the previous value

Clear

Clears

Updates

Replaces

The goal of unit testing is to prove that a method is implemented correctly

True, testing is meant to show that the method body is correct

False, testing is to try to refute the claim that a method body is correct

Testing what happens when multiple components are put together into a larger system is known as

unit testing

integration testing

system testing

derivative testing

Testing a whole end user stystem is known as

unit testing

integration testing

system testing

derivative testing

Testing individual components of software is known as

unit testing

integration testing

system testing

derivative testing

Who is responsible for making sure the precondition of a method is correct?

The client

The implementor

In reality its always you

Rob

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