Question 1

What must you do before adding a primitive type to a vector?

Accepted Answer

The primitive type must be converted to its corresponding wrapper type.A primitive integer value of 37 can easily converted to a corresponding Integer object: new Integer(37);

Question 2

All of the following are methods of the Iterator interface except:

Accepted Answer

A) clear() 
B) hasNext() 
C) next() 
D) remove() 
A) clear() 
B) hasNext() 
C) next() 
D) remove() A

Question 3

The List interface is for collections that allow repetition of elements and do not impose an order on their elements.

Accepted Answer

A) True 
 B)False  False

Question 4

If you want a class that implements the List interface and do not need any methods beyond those in the List interface,you can use the ____________ class.

Accepted Answer

A) Vector 
B) LinkedList 
C) HashSet 
D) TreeSet 
A) Vector 
B) LinkedList 
C) HashSet 
D) TreeSet

Question 5

A collection is a data structure for holding elements.

Accepted Answer

A) True 
 B)False

Question 6

Classes that implement the Set interface allows duplicate elements to occur.

Accepted Answer

A) True 
 B)False

Question 7

If you want a class that implements the Map interface and do not need any methods beyond those in the Map interface,you can use the ____________ class.

Accepted Answer

A) Vector 
B) AbstractMap 
C) HashMap 
D) HashSet 
A) Vector 
B) AbstractMap 
C) HashMap 
D) HashSet

Question 8

The difference between the List interface and the Set interface is that the Set interface does not impose an order on its unique elements.

Accepted Answer

A) True 
 B)False

Question 9

Create a for loop to initially set the values of the vector created in number 1 above to the value of negative 1.0.

Accepted Answer

for(int i=0; i < 49;

Question 10

The AbstractSequentialList class provides efficient implementation of sequentially moving through the list at the expense of having inefficient implementation of random access to elements.

Accepted Answer

A) True 
 B)False

Question 11

Write a method named displayList()that has one parameter of type Vector and has a return value of void.The method uses an iterator to display the contents of the Vector.

Accepted Answer

public static void displayList

Question 12

All of the following are members of Java's Collection class except:

Accepted Answer

A) Queue 
B) LinkedList 
C) Vector 
D) Set 
A) Queue 
B) LinkedList 
C) Vector 
D) Set

Question 13

What is the purpose of the Java Iterator interface?

Accepted Answer

The Iterator interface provide

Question 14

For-each loops can not be used with Collection classes.

Accepted Answer

A) True 
 B)False

Question 15

The primary interface/interfaces for a collection class is/are:

Accepted Answer

A) Collection 
B) Set 
C) List 
D) All of the above 
A) Collection 
B) Set 
C) List 
D) All of the above

Question 16

All of the following methods are part of the Collection<T> interface except:

Accepted Answer

A) Contains() 
B) toArray() 
C) retainAll() 
D) toString() 
A) Contains() 
B) toArray() 
C) retainAll() 
D) toString()

Question 17

The interface SortedSet and the concrete class _________ is designed for implementations of the Set interface that provide for rapid retrieval of elements.

Accepted Answer

A) Vector 
B) LinkedList 
C) HashSet 
D) TreeSet 
A) Vector 
B) LinkedList 
C) HashSet 
D) TreeSet

Question 18

Compare and contrast vectors and arrays.

Accepted Answer

Vectors have many built in features that

Question 19

A Java collection is any class that implements the Collection interface.

Accepted Answer

A) True 
 B)False

Question 20

If you want a class that implements the Set interface and do not need any methods beyond those in the Set interface,you can use the concrete class:

Accepted Answer

A) Vector 
B) LinkedList 
C) HashSet 
D) TreeSet 
A) Vector 
B) LinkedList 
C) HashSet 
D) TreeSet

What must you do before adding a primitive type to a vector?

All of the following are methods of the Iterator interface except:

The List interface is for collections that allow repetition of elements and do not impose an order on their elements.

If you want a class that implements the List interface and do not need any methods beyond those in the List interface,you can use the ____________ class.

A collection is a data structure for holding elements.

Classes that implement the Set interface allows duplicate elements to occur.

If you want a class that implements the Map interface and do not need any methods beyond those in the Map interface,you can use the ____________ class.

The difference between the List<T> interface and the Set<T> interface is that the Set<T> interface does not impose an order on its unique elements.

Create a for loop to initially set the values of the vector created in number 1 above to the value of negative 1.0.

The AbstractSequentialList class provides efficient implementation of sequentially moving through the list at the expense of having inefficient implementation of random access to elements.

Write a method named displayList()that has one parameter of type Vector and has a return value of void.The method uses an iterator to display the contents of the Vector.

All of the following are members of Java's Collection class except:

What is the purpose of the Java Iterator interface?

For-each loops can not be used with Collection classes.

The primary interface/interfaces for a collection class is/are:

All of the following methods are part of the Collection<T> interface except:

The interface SortedSet and the concrete class _________ is designed for implementations of the Set interface that provide for rapid retrieval of elements.

Compare and contrast vectors and arrays.

A Java collection is any class that implements the Collection interface.

If you want a class that implements the Set interface and do not need any methods beyond those in the Set interface,you can use the concrete class:

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

Generics and the Arraylist Class

Linked Data Structures

Swing I

Swing II

Java Never Ends

Recursion

Applets

Filters

Exam 16: Collections and Iterators

What must you do before adding a primitive type to a vector?

All of the following are methods of the Iterator interface except:

The List interface is for collections that allow repetition of elements and do not impose an order on their elements.

If you want a class that implements the List interface and do not need any methods beyond those in the List interface,you can use the ____________ class.

A collection is a data structure for holding elements.

Classes that implement the Set interface allows duplicate elements to occur.

If you want a class that implements the Map interface and do not need any methods beyond those in the Map interface,you can use the ____________ class.

The difference between the List<T> interface and the Set<T> interface is that the Set<T> interface does not impose an order on its unique elements.

Create a for loop to initially set the values of the vector created in number 1 above to the value of negative 1.0.

The AbstractSequentialList class provides efficient implementation of sequentially moving through the list at the expense of having inefficient implementation of random access to elements.

Write a method named displayList()that has one parameter of type Vector and has a return value of void.The method uses an iterator to display the contents of the Vector.

All of the following are members of Java's Collection class except:

What is the purpose of the Java Iterator interface?

For-each loops can not be used with Collection classes.

The primary interface/interfaces for a collection class is/are:

All of the following methods are part of the Collection<T> interface except:

The interface SortedSet and the concrete class _________ is designed for implementations of the Set interface that provide for rapid retrieval of elements.

Compare and contrast vectors and arrays.

A Java collection is any class that implements the Collection interface.

If you want a class that implements the Set interface and do not need any methods beyond those in the Set interface,you can use the concrete class:

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

Generics and the Arraylist Class

Linked Data Structures

Swing I

Swing II

Java Never Ends

Recursion

Applets

Filters