Question 1

The conversion from an object of a wrapper class to a value of its associated primitive type is called:

Accepted Answer

A) Boxing 
B) Unboxing 
C) Converting 
D) Reinstantiating 
A) Boxing 
B) Unboxing 
C) Converting 
D) Reinstantiating

Question 2

You should avoid the use of null as an argument to a method.

Accepted Answer

A) True 
 B)False

Question 3

Javadoc requires a comment to be delimited by _________ to be included in the extracted class interface.

Accepted Answer

A) // // 
B) /* */ 
C) /** */ 
D) " " 
A) // // 
B) /* */ 
C) /** */ 
D) " "

Question 4

What is the purpose of Java's wrapper classes?

Accepted Answer

The wrapper classes contain a number of

Question 5

Create a Java class named Book with instance variables title,author,ISBN,and yearPublished.Include javadoc style comments to describe your interface.Such a class would normally have methods,but you are not required to supply any methods.

Accepted Answer

/** Class for a book with title,author,I

Question 6

Add accessor and mutator methods to the Book class created in question #13.

Accepted Answer

/** Class for a book with title,author,I

Question 7

The String class is a mutable class.

Accepted Answer

A) True 
 B)False

Question 8

When used with objects,what is the equality ( == )operator really comparing?

Accepted Answer

The == operator does not check that the

Question 9

A main method can be placed inside a class definition.

Accepted Answer

A) True 
 B)False

Question 10

A static method is one that can be used with a _____________.

Accepted Answer

A) instance variable 
B) local variable 
C) global variable 
D) the class name as a calling object 
A) instance variable 
B) local variable 
C) global variable 
D) the class name as a calling object

Question 11

In a static method,you may use the this parameter either explicitly or implicitly.

Accepted Answer

A) True 
 B)False

Question 12

A class that contains public methods that can change the data in the object of a class is called a/an:

Accepted Answer

A) mutable class 
B) immutable class 
C) invariant class 
D) none of the above 
A) mutable class 
B) immutable class 
C) invariant class 
D) none of the above

Question 13

Static variables are often used:

Accepted Answer

A) in arithmetic expressions 
B) to communicate between objects 
C) within looping structures 
D) all of the above 
A) in arithmetic expressions 
B) to communicate between objects 
C) within looping structures 
D) all of the above

Question 14

All of these are methods of Java's Math class except:

Accepted Answer

A) pow 
B) min 
C) random 
D) toString 
A) pow 
B) min 
C) random 
D) toString

Question 15

A condition that allows a programmer to circumvent the private modifier and change the private instance variable is called:

Accepted Answer

A) a copy constructor 
B) a privacy leak 
C) a class invariant 
D) an anonymous object 
A) a copy constructor 
B) a privacy leak 
C) a class invariant 
D) an anonymous object

Question 16

You may use methods of the Math class without an import statement.

Accepted Answer

A) True 
 B)False

Question 17

A copy constructor has _________ parameters.

Accepted Answer

A) zero 
B) one 
C) two 
D) three 
A) zero 
B) one 
C) two 
D) three

Question 18

Define boxing and unboxing.

Accepted Answer

Boxing and unboxing are terms that refer

Question 19

The Math method that returns the nearest whole number that is greater than or equal to its argument is:

Accepted Answer

A) round 
B) ceil 
C) floor 
D) all of the above 
A) round 
B) ceil 
C) floor 
D) all of the above

Question 20

A class invariant is a statement that is always true for every object of the class.

Accepted Answer

A) True 
 B)False

The conversion from an object of a wrapper class to a value of its associated primitive type is called:

You should avoid the use of null as an argument to a method.

Javadoc requires a comment to be delimited by _________ to be included in the extracted class interface.

What is the purpose of Java's wrapper classes?

Create a Java class named Book with instance variables title,author,ISBN,and yearPublished.Include javadoc style comments to describe your interface.Such a class would normally have methods,but you are not required to supply any methods.

Add accessor and mutator methods to the Book class created in question #13.

The String class is a mutable class.

When used with objects,what is the equality ( == )operator really comparing?

A main method can be placed inside a class definition.

A static method is one that can be used with a _____________.

In a static method,you may use the this parameter either explicitly or implicitly.

A class that contains public methods that can change the data in the object of a class is called a/an:

Static variables are often used:

All of these are methods of Java's Math class except:

A condition that allows a programmer to circumvent the private modifier and change the private instance variable is called:

You may use methods of the Math class without an import statement.

A copy constructor has _________ parameters.

Define boxing and unboxing.

The Math method that returns the nearest whole number that is greater than or equal to its argument is:

A class invariant is a statement that is always true for every object of the class.

Getting Started

Console Input and Output

Flow of Control

Defining Classes I

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

Collections and Iterators

Swing I

Swing II

Java Never Ends

Recursion

Applets

Filters

Exam 5: Defining Classes Ii

The conversion from an object of a wrapper class to a value of its associated primitive type is called:

You should avoid the use of null as an argument to a method.

Javadoc requires a comment to be delimited by _________ to be included in the extracted class interface.

What is the purpose of Java's wrapper classes?

Create a Java class named Book with instance variables title,author,ISBN,and yearPublished.Include javadoc style comments to describe your interface.Such a class would normally have methods,but you are not required to supply any methods.

Add accessor and mutator methods to the Book class created in question #13.

The String class is a mutable class.

When used with objects,what is the equality ( == )operator really comparing?

A main method can be placed inside a class definition.

A static method is one that can be used with a _____________.

In a static method,you may use the this parameter either explicitly or implicitly.

A class that contains public methods that can change the data in the object of a class is called a/an:

Static variables are often used:

All of these are methods of Java's Math class except:

A condition that allows a programmer to circumvent the private modifier and change the private instance variable is called:

You may use methods of the Math class without an import statement.

A copy constructor has _________ parameters.

Define boxing and unboxing.

The Math method that returns the nearest whole number that is greater than or equal to its argument is:

A class invariant is a statement that is always true for every object of the class.

Getting Started

Console Input and Output

Flow of Control

Defining Classes I

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

Collections and Iterators

Swing I

Swing II

Java Never Ends

Recursion

Applets

Filters