CSE Final

True

A name defined in an outer scope is also available in all blocks nested inside that scope

True

A reference type variable can store a null reference in Java.

True

A sub-class has no access to private instance variables of its super class.

False

A subclass that inherits instance variables from its super class may not declare additional instance variables.

True

An "has a" relationship is implemented by composition.

instantiation

Creating an object of a class is called _____.

Object is destroyed

Immediately after the objects variables are initiated the

methods

In Java functions are called _____.

2

In Java, a two dimensional array requires _____ indexes to access a specific element.

True

In Java, arrays are reference types.

int

In Java, when you divide an int by another int, the result will be a(n) _____.

False

Members that are private in the super class are visible in the derived class.

void

The Java keyword used to declare that a method does not return a value is _____.

False

The equals method and the == operator perform the same actions.

Data hiding can allow us to separate the information from its representation.

True

True

We can use a variable as an index expression to access an array element in Java.

True

When there are no remaining references to an object in your Java program, the object will be destroyed.

new

Which keyword is used in Java to create an object?

Polymorphism

Which object oriented element best allows us to designing and implementing families of related types that share outward similarities, but have specialized behaviors?

Composition

Which object oriented element is used to define "has a" relationships?

blueprints and buildings *maybe

Which of the following are good analogies for classes and objects?

int double boolean float byte chart short long

Which of the following is a Java primitive data type? Choose all that apply.

an array is a set of variables the elements of an array all located contiguously in memory the elements of an array all have the same data type the elements of an array are accessed by an integer index

Which of the following is/are true about arrays? Choose all that apply.

int[] values = new int[6];

Which of the following would correctly declare and instantiate an array of 6 ints?

True

You can always use a sub-class object in place of a super class object.

False

You cannot have an object reference whose type is an abstract class.

new int[5]

which of the following would instantiate an array of 5 integers in Java? Choose all that apply.