2403 Java Exam 3

A/An ________ can change the length while the program is running.

ArrayList

Inner and outer classes do not have access to each other's private members.

False

Java does not come with a LinkedList library class.

False

The Type parameter is always indicated as a T.

False

When using a linked list, you do not need to know when the end of the list has been reached.

False

You can plug in a primitive type for a type parameter.

False

You can use any primitive type as the base type of an ArrayList class.

False

The ________ manager is the simplest layout manager. It arranges components one after the other, going from left to right, in the order in which you add them.

FlowLayout

The ________ manager arranges components in a two-dimensional table with some number of rows and columns.

GridLayout

Composition indicates a/an ________ relationship.

Has-a

An iterator is any object that allows you to step through the list one item at a time.

True

ArrayList objects do not have the array square-bracket notation.

True

Forgetting to set the reference instance variable of the last node in a linked list to null will cause a logic error.

True

Linked lists introduce the possibility of a privacy leak occurring.

True

The definition of a parameterized class is a class with one or more type parameters.

True

You can not use the set method to put an element at just any index.

True

The Java standard libraries have a class named ________ that behaves almost exactly the same as the class ArrayList.

Vector

A class that implements an interface but only gives definitions for some of the method headings given in the interface is called a/an:

abstract class.

A Java interface is an example of:

abstraction

A button fires events know as:

action events.

The ActionListener interface requires that the method ________ be implemented.

actionPerformed()

To place an element in an ArrayList position for the first time, you usually use the method:

add()

Java contains a mechanism that automatically reclaims memory. This mechanism is called:

garbage collection

Class and method definitions that include parameters for types are called:

generics

A ________ maps a data value such as a String into a number:

hash function

A common use of inner classes is:

helper

Standard layout managers are defined in the ________ package.

java.awt

The Comparable interface is in the ________ package.

java.lang

To use the Java Iterator Interface you must import the ________ package.

java.util

To use the Java class ArrayList, you must import the package:

java.util

All of the following are methods of the ArrayList class except:

length()

A button component should have a registered ________ associated with it.

listener

The method that must be implemented in a class using the Comparable interface is:

public int compareTo(Object other).

Which is the correct syntax for placing the string "boat" into an ArrayList name recVehicles in position 3 for the first time?

recVehicles.add(3, "boat");

All of the following are methods of the ArrayList class except:

resize()

A ________ copy of an object is a copy that has references in common with the original object.

shallow copy

When using ArrayLists the method ________ can be used to save memory:

trimToSize()

A class that uses an interface must use the keyword:

Implements

A class obtained from a generic class by plugging in a type for the type parameter is said to ________ the generic class.

Instantiate

Inheritance indicates a/an ________ relationship.

Is-a

An interface and all of its method headings are normally declared to be:

public

Any constant variables defined in an interface must be defined as:

public

When defining an inner class to be a helper class for an outer class, the inner classes access should be marked as:

Private

The remove(Object theElement) method of the ArrayList class returns:

Boolean

The ________ manager places components into five regions.

BorderLayout

A node contains:

Both data item(s) and reference(s) to another node

A queue is a last-in/first-out structure.

False

When using the clone method from an inherited base class you should account for a ________ exception.

CloneNotSupportedException

An interface specifies the headings and definitions for methods that must be defined in any class that implements the interface.

False

A programming style that uses a signal and response approach to programming is called:

Event-driven Programming.

The keyword ________ can be used to place a bound on a type parameter.

Extends

A deep copy of an object is a copy that has references in common with the original object.

False

A menu item is an object of the class:

JMenuItem

A ________ is an object that is a simple container class that groups other objects.

JPanel

A ________ allows multiple lines of text to be displayed.

JTextArea

A common exception that occurs when using linked lists is the:

NullPointerException

In Java, a node is a/an:

Object

Inner classes available outside the scope of their outer class are modified by the keyword:

Public

If an inner class contains non static members, then the class name must be modified by the keyword:

Static

The getText() method of a JTextField object returns an object of type:

String

A class definition can have more than one type parameter.

True

A copy constructor and a clone method should normally make a deep copy whenever possible.

True

A linked data structure contains nodes and links.

True

The compareTo method should return ________ if the calling object equals the parameter.

Zero

The JFrame method setVisible() takes one argument of type:

boolean.

An interface may contain:

constant variables.

A ________ copy of an object is a copy that has no references in common with the original object.

deep copy

A ________ linked list has nodes that contain two references to Nodes.

doubly

If the head instance variable of a linked list contains a reference to null, this means the list is:

empty

Making the Node class a private inner class of a linked data structure is an example of:

encapsulation

In Java, you indicate the end of a linked list be setting the link instance variable of the last node in the linked list to:

null

In Java, a derived class can have ________ base class(es).

one

A ________ is the smallest unit of space on which your screen can write.

pixel