Question 1

A deep copy of an object __________.

Accepted Answer

A)  is an assignment of that object to another object 
B)  is an operation that copies an aggregate object and all the objects that it references 
C)  is a bogus term and means nothing 
D)  is always a private method 
A)  is an assignment of that object to another object 
B)  is an operation that copies an aggregate object and all the objects that it references 
C)  is a bogus term and means nothing 
D)  is always a private method B

Question 2

In Java it is possible to write a method that will return __________.

Accepted Answer

A)  a whole number 
B)  a reference to an object 
C)  a string of characters 
D)  Any of these 
A)  a whole number 
B)  a reference to an object 
C)  a string of characters 
D)  Any of these D

Question 3

If the this variable is used to call a constructor, __________.

Accepted Answer

A)  a compiler error will result if it is not the first statement of the constructor 
B)  a compiler error will result if it is the first statement of the constructor 
C)  nothing will happen 
D)  the this variable cannot be used as a constructor call 
A)  a compiler error will result if it is not the first statement of the constructor 
B)  a compiler error will result if it is the first statement of the constructor 
C)  nothing will happen 
D)  the this variable cannot be used as a constructor call A

Question 4

When you make a copy of the aggregate object and of the objects that it references, __________.

Accepted Answer

A)  you are performing a shallow copy 
B)  you are performing a nested copy 
C)  you are performing a deep copy 
D)  a compiler error will occur 
A)  you are performing a shallow copy 
B)  you are performing a nested copy 
C)  you are performing a deep copy 
D)  a compiler error will occur

Question 5

The names of the enum constants in an enumerated data type must be enclosed in quotation marks.

Accepted Answer

A) True 
 B)False

Question 6

If the following is from the method section of a UML diagram, which of the statements below is true? 
+ equals(object2:Stock) : boolean

Accepted Answer

A)  This is a public method that accepts a Stock object as its argument and returns a boolean value. 
B)  This is a public method that returns a reference to a String object. 
C)  This is a private method that receives two objects from the Stock class and returns a boolean value. 
D)  This is a private method that returns a boolean value. 
A)  This is a public method that accepts a Stock object as its argument and returns a boolean value. 
B)  This is a public method that returns a reference to a String object. 
C)  This is a private method that receives two objects from the Stock class and returns a boolean value. 
D)  This is a private method that returns a boolean value.

Question 7

An instance of a class does not have to exist in order for values to be stored in a class's static fields.

Accepted Answer

A) True 
 B)False

Question 8

When a reference variable is passed as an argument to a method __________.

Accepted Answer

A)  a copy of the variable's value is passed into the method's parameter 
B)  the method has access to the object that the variable references 
C)  the method becomes a static method 
D)  the program terminates 
A)  a copy of the variable's value is passed into the method's parameter 
B)  the method has access to the object that the variable references 
C)  the method becomes a static method 
D)  the program terminates

Question 9

__________ is the term for the relationship created by object aggregation.

Accepted Answer

A)  "Has a" 
B)  Inner class 
C)  "Is a" 
D)  One-to-many 
A)  "Has a" 
B)  Inner class 
C)  "Is a" 
D)  One-to-many

Question 10

Assume the class BankAccount has been created and the following statement correctly creates an instance of the class. BankAccount account = new BankAccount(5000.00);
What is true about the following statement?
System.out.println(account);

Accepted Answer

A)  A runtime error will occur. 
B)  The method will display unreadable binary data on the screen. 
C)  The account object's toString method will be implicitly called. 
D)  A compiler error will occur. 
A)  A runtime error will occur. 
B)  The method will display unreadable binary data on the screen. 
C)  The account object's toString method will be implicitly called. 
D)  A compiler error will occur.

Question 11

If object1 and object2 are objects of the same class, to make object2 a copy of object1 __________.

Accepted Answer

A)  write a method for the class that will make a field by field copy of object1 data members into object2 data members 
B)  use the copy method that is a part of the Java language 
C)  use the default constructor to create object2 with object1 data members 
D)  use an assignment statement to make object2 a copy of object1 
A)  write a method for the class that will make a field by field copy of object1 data members into object2 data members 
B)  use the copy method that is a part of the Java language 
C)  use the default constructor to create object2 with object1 data members 
D)  use an assignment statement to make object2 a copy of object1

Question 12

To compare two objects in a class, __________.

Accepted Answer

A)  use the == operator (for example, object1 == object2) 
B)  write a method to do a byte-by-byte compare of the two objects 
C)  write an equals method that will make a field by field compare of the two objects 
D)  This cannot be done since objects consist of several fields. 
A)  use the == operator (for example, object1 == object2) 
B)  write a method to do a byte-by-byte compare of the two objects 
C)  write an equals method that will make a field by field compare of the two objects 
D)  This cannot be done since objects consist of several fields.

Question 13

Both instance fields and instance methods are associated with a specific instance of a class, and they cannot be used until an instance of the class is created.

Accepted Answer

A) True 
 B)False

Question 14

If you write a toString method for a class, Java will automatically call the method any time you concatenate an object of the class with a string.

Accepted Answer

A) True 
 B)False

Question 15

The key word this is the name of a reference variable that an object can use to refer to itself.

Accepted Answer

A) True 
 B)False

Question 16

The whole-part relationship created by object aggregation is more often called a(n) __________ relationship.

Accepted Answer

A)  "has a" 
B)  inner class 
C)  extra class 
D)  inside class 
A)  "has a" 
B)  inner class 
C)  extra class 
D)  inside class

Question 17

The only limitation that static methods have is __________.

Accepted Answer

A)  they must be declared outside of the class 
B)  they cannot refer to nonstatic members of the class 
C)  they can only be called from static members of the class 
D)  they can refer only to nonstatic members of the class 
A)  they must be declared outside of the class 
B)  they cannot refer to nonstatic members of the class 
C)  they can only be called from static members of the class 
D)  they can refer only to nonstatic members of the class

Question 18

Given the following declaration: enum Tree ( OAK, MAPLE, PINE )
What is the fully-qualified name of the PINE enum constant?

Accepted Answer

A)  enum.PINE 
B)  PINE 
C)  Tree.PINE 
D)  enum.Tree.PINE 
A)  enum.PINE 
B)  PINE 
C)  Tree.PINE 
D)  enum.Tree.PINE

Question 19

A class's static methods do not operate on the fields that belong to any instance of the class.

Accepted Answer

A) True 
 B)False

Question 20

The JVM periodically performs the __________ process to remove unreferenced objects from memory.

Accepted Answer

A)  memory shuffling 
B)  system restore 
C)  garbage collection 
D)  memory sweeping 
A)  memory shuffling 
B)  system restore 
C)  garbage collection 
D)  memory sweeping

A deep copy of an object __________.

In Java it is possible to write a method that will return __________.

If the this variable is used to call a constructor, __________.

When you make a copy of the aggregate object and of the objects that it references, __________.

The names of the enum constants in an enumerated data type must be enclosed in quotation marks.

If the following is from the method section of a UML diagram, which of the statements below is true? + equals(object2:Stock) : boolean

An instance of a class does not have to exist in order for values to be stored in a class's static fields.

When a reference variable is passed as an argument to a method __________.

__________ is the term for the relationship created by object aggregation.

Assume the class BankAccount has been created and the following statement correctly creates an instance of the class. BankAccount account = new BankAccount(5000.00); What is true about the following statement? System.out.println(account);

If object1 and object2 are objects of the same class, to make object2 a copy of object1 __________.

To compare two objects in a class, __________.

Both instance fields and instance methods are associated with a specific instance of a class, and they cannot be used until an instance of the class is created.

If you write a toString method for a class, Java will automatically call the method any time you concatenate an object of the class with a string.

The key word this is the name of a reference variable that an object can use to refer to itself.

The whole-part relationship created by object aggregation is more often called a(n) __________ relationship.

The only limitation that static methods have is __________.

Given the following declaration: enum Tree ( OAK, MAPLE, PINE ) What is the fully-qualified name of the PINE enum constant?

A class's static methods do not operate on the fields that belong to any instance of the class.

The JVM periodically performs the __________ process to remove unreferenced objects from memory.

Introduction to Computers and Java

Java Fundamentals

Decision Structures

Loops and Files

Methods

A First Look at Classes

Arrays and the Arraylist Class

Text Processing and More About Wrapper Classes

Inheritance

Exceptions and Advanced File Io

Java-Fx: Gui Programming and Basic Controls

Java-Fx: Advanced Controls

Java-Fx: Graphics, Effects, and Media

Recursion

Databases

Filters

Exam 8: A Second Look at Classes and Objects

A deep copy of an object __________.

In Java it is possible to write a method that will return __________.

If the this variable is used to call a constructor, __________.

When you make a copy of the aggregate object and of the objects that it references, __________.

The names of the enum constants in an enumerated data type must be enclosed in quotation marks.

If the following is from the method section of a UML diagram, which of the statements below is true? + equals(object2:Stock) : boolean

An instance of a class does not have to exist in order for values to be stored in a class's static fields.

When a reference variable is passed as an argument to a method __________.

__________ is the term for the relationship created by object aggregation.

Assume the class BankAccount has been created and the following statement correctly creates an instance of the class. BankAccount account = new BankAccount(5000.00); What is true about the following statement? System.out.println(account);

If object1 and object2 are objects of the same class, to make object2 a copy of object1 __________.

To compare two objects in a class, __________.

Both instance fields and instance methods are associated with a specific instance of a class, and they cannot be used until an instance of the class is created.

If you write a toString method for a class, Java will automatically call the method any time you concatenate an object of the class with a string.

The key word this is the name of a reference variable that an object can use to refer to itself.

The whole-part relationship created by object aggregation is more often called a(n) __________ relationship.

The only limitation that static methods have is __________.

Given the following declaration: enum Tree ( OAK, MAPLE, PINE ) What is the fully-qualified name of the PINE enum constant?

A class's static methods do not operate on the fields that belong to any instance of the class.

The JVM periodically performs the __________ process to remove unreferenced objects from memory.

Introduction to Computers and Java

Java Fundamentals

Decision Structures

Loops and Files

Methods

A First Look at Classes

Arrays and the Arraylist Class

Text Processing and More About Wrapper Classes

Inheritance

Exceptions and Advanced File Io

Java-Fx: Gui Programming and Basic Controls

Java-Fx: Advanced Controls

Java-Fx: Graphics, Effects, and Media

Recursion

Databases

Filters