Question 1

What is demonstrated by the following code?
Try
{
(try block statements . . .)
}
Catch(NumberFormatException | IOException ex)
{
RespondToError();
}

Accepted Answer

A)  Multi-catch, a catch clause that can handle more than one exception, beginning in Java 7 
B)  A catch clause that can handle either exception type, but not both 
C)  A conditional catch clause prototype that uses an overloaded OR operator to bind exception types 
D)  This code is not supported in any version of Java, an error will result. 
A)  Multi-catch, a catch clause that can handle more than one exception, beginning in Java 7 
B)  A catch clause that can handle either exception type, but not both 
C)  A conditional catch clause prototype that uses an overloaded OR operator to bind exception types 
D)  This code is not supported in any version of Java, an error will result.

Question 2

If you want to append data to the existing binary file, BinaryFile.dat, use the following statements to open the file.

Accepted Answer

A)  FileOutputStream fstream = new FileOutputStream("BinaryFile.dat");
DataOutputStream binaryOutputFile =
New DataOutputStream(fstream); 
B)  FileOutputStream fstream = new FileOutputStream("BinaryFile.dat", False);
DataOutputStream binaryOutputFile =
New DataOutputStream(fstream); 
C)  FileOutputStream fstream = new FileOutputStream("BinaryFile.dat", true);
DataOutputStream binaryOutputFile =
New DataOutputStream(fstream); 
D)  FileOutputStream fstream = new FileOutputStream("BinaryFile.dat");
DataOutputStream binaryOutputFile =
New DataOutputStream(fstream, true); 
A)  FileOutputStream fstream = new FileOutputStream("BinaryFile.dat");
DataOutputStream binaryOutputFile =
New DataOutputStream(fstream); 
B)  FileOutputStream fstream = new FileOutputStream("BinaryFile.dat", False);
DataOutputStream binaryOutputFile =
New DataOutputStream(fstream); 
C)  FileOutputStream fstream = new FileOutputStream("BinaryFile.dat", true);
DataOutputStream binaryOutputFile =
New DataOutputStream(fstream); 
D)  FileOutputStream fstream = new FileOutputStream("BinaryFile.dat");
DataOutputStream binaryOutputFile =
New DataOutputStream(fstream, true);

Question 3

If the IOData.dat file does not exist, what will happen when the following statement is executed?
RandomAccessFile randomFile =
New RandomAccessFile("IOData.dat", "rw");

Accepted Answer

A)  A FileNotFoundException will be thrown. 
B)  An IOExcepton will be thrown. 
C)  The file IOData.dat will be created. 
D)  This is a critical error, the program will stop execution. 
A)  A FileNotFoundException will be thrown. 
B)  An IOExcepton will be thrown. 
C)  The file IOData.dat will be created. 
D)  This is a critical error, the program will stop execution.

Question 4

The call stack is an internal list of all the methods that are currently executing.

Accepted Answer

A) True 
 B)False

Question 5

A(n) ________ is an object that is generated in memory as the result of an error or an unexpected event.

Accepted Answer

A)  exception handler 
B)  exception 
C)  default exception handler 
D)  error message 
A)  exception handler 
B)  exception 
C)  default exception handler 
D)  error message

Question 6

When writing a string to a binary file or reading a string from a binary file, it is recommended that you use:

Accepted Answer

A)  Methods that use UTF-8 encoding 
B)  The Scanner class methods 
C)  The FileReader and Writer class methods 
D)  The System.In and System.Out methods 
A)  Methods that use UTF-8 encoding 
B)  The Scanner class methods 
C)  The FileReader and Writer class methods 
D)  The System.In and System.Out methods

Question 7

The throws clause causes an exception to be thrown.

Accepted Answer

A) True 
 B)False

Question 8

The catch clause:

Accepted Answer

A)  follows the try clause 
B)  starts with the word catch followed by a parameter list in parentheses containing an ExceptionType parameter variable 
C)  contains code to gracefully handle the exception type listed in the parameter list 
D)  all of the above 
A)  follows the try clause 
B)  starts with the word catch followed by a parameter list in parentheses containing an ExceptionType parameter variable 
C)  contains code to gracefully handle the exception type listed in the parameter list 
D)  all of the above

Question 9

When deserializing an object using the readObject method, you must cast the return value to the desired class type.

Accepted Answer

A) True 
 B)False

Question 10

In versions of Java prior to Java 7, each catch clause can handle only one type of exception.

Accepted Answer

A) True 
 B)False

Question 11

When the code in a try block may throw more than one type of exception, you need to write a catch clause for each type of exception that could potentially be thrown.

Accepted Answer

A) True 
 B)False

Question 12

If a method does not handle a possible checked exception, what must the method have?

Accepted Answer

A)  A catch clause in its header 
B)  A try/catch clause in its header 
C)  A try clause in its header 
D)  A throws clause in its header 
A)  A catch clause in its header 
B)  A try/catch clause in its header 
C)  A try clause in its header 
D)  A throws clause in its header

Question 13

To write data to a binary file you create objects from the following classes:

Accepted Answer

A)  File and PrintWriter 
B)  File and Scanner 
C)  FileOutputStream and DataOutputStream 
D)  BinaryFileWriter and BinaryDataWriter 
A)  File and PrintWriter 
B)  File and Scanner 
C)  FileOutputStream and DataOutputStream 
D)  BinaryFileWriter and BinaryDataWriter

Question 14

The IllegalArgumentException class extends the RuntimeException class, and is therefore:

Accepted Answer

A)  a checked exception class 
B)  an unchecked exception class 
C)  never used directly 
D)  none of the above 
A)  a checked exception class 
B)  an unchecked exception class 
C)  never used directly 
D)  none of the above

Question 15

When an exception is thrown by a method that is executing under several layers of method calls, a stack trace indicates the method executing when an exception occurred and all of the methods that were called in order to execute that method.

Accepted Answer

A) True 
 B)False

Question 16

If the program does not handle an unchecked exception:

Accepted Answer

A)  the exception is ignored 
B)  the program is halted and the default exception handler handles the exception 
C)  the program must handle the exception 
D)  this will cause a compilation error 
A)  the exception is ignored 
B)  the program is halted and the default exception handler handles the exception 
C)  the program must handle the exception 
D)  this will cause a compilation error

Question 17

Look at the following code: FileInputStream fstream =
New FileInputStream("MyInfo.dat");
DataInputStream inputFile =
New DataInputStream(fstream);
This code can also be written as:

Accepted Answer

A)  FileInputStream inputFile = new FileInputStream(new DataInputStream("MyInfo.dat")); 
B)  DataInputStream inputFile = new DataInputStream(new FileInputStream("MyInfo.dat")); 
C)  FileInputStream fstream = new DataInputStream("InputFile.txt"); 
D)  DataInputStream inputFile = new DataInputStream("InputFile.txt"); 
A)  FileInputStream inputFile = new FileInputStream(new DataInputStream("MyInfo.dat")); 
B)  DataInputStream inputFile = new DataInputStream(new FileInputStream("MyInfo.dat")); 
C)  FileInputStream fstream = new DataInputStream("InputFile.txt"); 
D)  DataInputStream inputFile = new DataInputStream("InputFile.txt");

Question 18

Assume that the classes BlankISBN, NegativePrice, and NegativeNumberOrdered are exception classes that inherit from Exception. The following code is a constructor for the Book class. What must be TRUE about any method that instantiates the Book class with this constructor?
Public Book(String ISBNOfBook, double priceOfBook,
Int numberOrderedOfBook) throws BlankISBN,
NegativePrice,
NegativeNumberOrdered
{
If (ISBNOfBook == "")
Throw new BlankISBN();
If (priceOfBook < 0)
Throw new NegativePrice(priceOfBook);
If (numberedOrderedOfBook < 0)
Throw new NegativeNumberOrdered(numberOrderedv);
ISBN = ISBNOfBook;
Price = priceOfBook;
NumberedOrdered = numberOrderedOfBook;
}

Accepted Answer

A)  It must call the constructor with valid data or a compiler error will occur. 
B)  It must contain an inner class that extends the IOException class. 
C)  It must handle all of the possible exceptions thrown by the constructor or have its own throws clause specifying them. 
D)  All of the above 
A)  It must call the constructor with valid data or a compiler error will occur. 
B)  It must contain an inner class that extends the IOException class. 
C)  It must handle all of the possible exceptions thrown by the constructor or have its own throws clause specifying them. 
D)  All of the above

Question 19

If the code in a method can potentially throw a checked exception, then that method must:

Accepted Answer

A)  handle the exception 
B)  have a throws clause listed in the method header 
C)  neither A nor B 
D)  either A or B 
A)  handle the exception 
B)  have a throws clause listed in the method header 
C)  neither A nor B 
D)  either A or B

Question 20

When you write a method that throws a checked exception, you must:

Accepted Answer

A)  have a throws clause in the method header 
B)  override the default error method 
C)  use each class only once in a method 
D)  ensure that the error will occur at least once each time the program is executed 
A)  have a throws clause in the method header 
B)  override the default error method 
C)  use each class only once in a method 
D)  ensure that the error will occur at least once each time the program is executed

What is demonstrated by the following code? Try { (try block statements . . .) } Catch(NumberFormatException | IOException ex) { RespondToError(); }

If you want to append data to the existing binary file, BinaryFile.dat, use the following statements to open the file.

If the IOData.dat file does not exist, what will happen when the following statement is executed? RandomAccessFile randomFile = New RandomAccessFile("IOData.dat", "rw");

The call stack is an internal list of all the methods that are currently executing.

A(n) ________ is an object that is generated in memory as the result of an error or an unexpected event.

When writing a string to a binary file or reading a string from a binary file, it is recommended that you use:

The throws clause causes an exception to be thrown.

The catch clause:

When deserializing an object using the readObject method, you must cast the return value to the desired class type.

In versions of Java prior to Java 7, each catch clause can handle only one type of exception.

When the code in a try block may throw more than one type of exception, you need to write a catch clause for each type of exception that could potentially be thrown.

If a method does not handle a possible checked exception, what must the method have?

To write data to a binary file you create objects from the following classes:

The IllegalArgumentException class extends the RuntimeException class, and is therefore:

When an exception is thrown by a method that is executing under several layers of method calls, a stack trace indicates the method executing when an exception occurred and all of the methods that were called in order to execute that method.

If the program does not handle an unchecked exception:

Look at the following code: FileInputStream fstream = New FileInputStream("MyInfo.dat"); DataInputStream inputFile = New DataInputStream(fstream); This code can also be written as:

If the code in a method can potentially throw a checked exception, then that method must:

When you write a method that throws a checked exception, you must:

Introduction to Computers and Java

Java Fundamentals

Decision Structures

Loops and Files

Methods

A First Look at Classes

Arrays and the Arraylist Class

A Second Look at Classes and Objects

Text Processing and More About Wrapper Classes

Inheritance

A First Look at GUI Applications

Advanced GUI Applications

Applets and More

Creating GUI Applications With Javafx and Scene Builder

Recursion

Databases

Filters

Exam 11: Exceptions and Advanced File IO

What is demonstrated by the following code? Try { (try block statements . . .) } Catch(NumberFormatException | IOException ex) { RespondToError(); }

If you want to append data to the existing binary file, BinaryFile.dat, use the following statements to open the file.

If the IOData.dat file does not exist, what will happen when the following statement is executed? RandomAccessFile randomFile = New RandomAccessFile("IOData.dat", "rw");

The call stack is an internal list of all the methods that are currently executing.

A(n) ________ is an object that is generated in memory as the result of an error or an unexpected event.

When writing a string to a binary file or reading a string from a binary file, it is recommended that you use:

The throws clause causes an exception to be thrown.

The catch clause:

When deserializing an object using the readObject method, you must cast the return value to the desired class type.

In versions of Java prior to Java 7, each catch clause can handle only one type of exception.

When the code in a try block may throw more than one type of exception, you need to write a catch clause for each type of exception that could potentially be thrown.

If a method does not handle a possible checked exception, what must the method have?

To write data to a binary file you create objects from the following classes:

The IllegalArgumentException class extends the RuntimeException class, and is therefore:

When an exception is thrown by a method that is executing under several layers of method calls, a stack trace indicates the method executing when an exception occurred and all of the methods that were called in order to execute that method.

If the program does not handle an unchecked exception:

Look at the following code: FileInputStream fstream = New FileInputStream("MyInfo.dat"); DataInputStream inputFile = New DataInputStream(fstream); This code can also be written as:

If the code in a method can potentially throw a checked exception, then that method must:

When you write a method that throws a checked exception, you must:

Introduction to Computers and Java

Java Fundamentals

Decision Structures

Loops and Files

Methods

A First Look at Classes

Arrays and the Arraylist Class

A Second Look at Classes and Objects

Text Processing and More About Wrapper Classes

Inheritance

A First Look at GUI Applications

Advanced GUI Applications

Applets and More

Creating GUI Applications With Javafx and Scene Builder

Recursion

Databases

Filters