Question 1

A class definition can have more than one type parameter.

Accepted Answer

A) True 
 B)False  True

Question 2

Write Java statements to display the size of the resulting ArrayList from question 5 above.

Accepted Answer

System.out.println(list.size());

Question 3

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

Accepted Answer

A) trimToSize() 
B) trimDown() 
C) trimOff() 
D) None of the above 
A) trimToSize() 
B) trimDown() 
C) trimOff() 
D) None of the above A

Question 4

Inheritance is the reason why some parameters of the ArrayList class are of type Base_Type and others of type Object.

Accepted Answer

A) True 
 B)False

Question 5

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

Accepted Answer

A) Inherit 
B) Encapsulate 
C) Instantiate 
D) None of the above 
A) Inherit 
B) Encapsulate 
C) Instantiate 
D) None of the above

Question 6

Write a Java statement to create an ArrayList to hold 25 integers.

Accepted Answer

ArrayList<Integer

Question 7

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

Accepted Answer

A) True 
 B)False

Question 8

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

Accepted Answer

A) clear() 
B) resize() 
C) contains() 
D) trimToSize() 
A) clear() 
B) resize() 
C) contains() 
D) trimToSize()

Question 9

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

Accepted Answer

A) True 
 B)False

Question 10

What is the base type of the ArrayList defined in question number 2?

Accepted Answer

The answer of What is the base type of the...

Question 11

The compiler option -Xlint is good for debugging.

Accepted Answer

A) True 
 B)False

Question 12

The Type parameter is always indicated as a T.

Accepted Answer

A) True 
 B)False

Question 13

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

Accepted Answer

A) ensureCapacity() 
B) clear() 
C) isEmpty() 
D) trimToSize() 
A) ensureCapacity() 
B) clear() 
C) isEmpty() 
D) trimToSize()

Question 14

A generic class can be instantiated as any of the following base types except:

Accepted Answer

A) Character 
B) Array 
C) String 
D) Double 
A) Character 
B) Array 
C) String 
D) Double

Question 15

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

Accepted Answer

A) put() 
B) set() 
C) add() 
D) place() 
A) put() 
B) set() 
C) add() 
D) place()

Question 16

What are the three main disadvantages of an ArrayList?

Accepted Answer

1)They are less efficient than arrays; (

Question 17

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

Accepted Answer

A) Int 
B) Double 
C) Byte 
D) Boolean 
A) Int 
B) Double 
C) Byte 
D) Boolean

Question 18

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

Accepted Answer

A) java.awt 
B) java.io 
C) java.util 
D) java.container 
A) java.awt 
B) java.io 
C) java.util 
D) java.container

Question 19

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

Accepted Answer

A) length() 
B) size() 
C) set() 
D) get() 
A) length() 
B) size() 
C) set() 
D) get()

Question 20

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

Accepted Answer

A) Array 
B) ArrayList 
C) Type parameter 
D) None of the above 
A) Array 
B) ArrayList 
C) Type parameter 
D) None of the above

A class definition can have more than one type parameter.

Write Java statements to display the size of the resulting ArrayList from question 5 above.

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

Inheritance is the reason why some parameters of the ArrayList class are of type Base_Type and others of type Object.

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

Write a Java statement to create an ArrayList to hold 25 integers.

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

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

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

What is the base type of the ArrayList defined in question number 2?

The compiler option -Xlint is good for debugging.

The Type parameter is always indicated as a T.

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

A generic class can be instantiated as any of the following base types except:

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

What are the three main disadvantages of an ArrayList?

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

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

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

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

Getting Started

Console Input and Output

Flow of Control

Defining Classes I

Defining Classes Ii

Arrays

Inheritance

Console Input and Output

Exception Handling

File IO

Uml and Patterns

Interfaces and Inner Classes

Linked Data Structures

Collections and Iterators

Swing I

Swing II

Java Never Ends

Recursion

Applets

Filters

Exam 14: Generics and the Arraylist Class

A class definition can have more than one type parameter.

Write Java statements to display the size of the resulting ArrayList from question 5 above.

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

Inheritance is the reason why some parameters of the ArrayList class are of type Base_Type and others of type Object.

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

Write a Java statement to create an ArrayList to hold 25 integers.

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

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

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

What is the base type of the ArrayList defined in question number 2?

The compiler option -Xlint is good for debugging.

The Type parameter is always indicated as a T.

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

A generic class can be instantiated as any of the following base types except:

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

What are the three main disadvantages of an ArrayList?

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

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

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

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

Getting Started

Console Input and Output

Flow of Control

Defining Classes I

Defining Classes Ii

Arrays

Inheritance

Console Input and Output

Exception Handling

File IO

Uml and Patterns

Interfaces and Inner Classes

Linked Data Structures

Collections and Iterators

Swing I

Swing II

Java Never Ends

Recursion

Applets

Filters