Question 1

Which of the following methods are part of the Exception class and can be used to give information about a thrown exception?

Accepted Answer

A)  getInfo 
B)  printInfo 
C)  printStackTrace 
D)  getStackTrace 
E)  none of the above 
A)  getInfo 
B)  printInfo 
C)  printStackTrace 
D)  getStackTrace 
E)  none of the above C

Question 2

A(n) _____________________ is an object that defines an unusual or erroneous situation that is typically recoverable.

Accepted Answer

A)  error 
B)  exception 
C)  interface 
D)  try block 
E)  catch block 
A)  error 
B)  exception 
C)  interface 
D)  try block 
E)  catch block B

Question 3

Consider the following code fragment.

String s;
	for(int i = 0; i < s.length(); i++)
		System.out.println(s.charAt(i));

What exception will be thrown by this code and why?

Accepted Answer

This code will throw a NullPointerException since the String object s is never instantiated, but it is dereferenced when the charAt method is called.

Question 4

Which of the following exceptions are unchecked?

Accepted Answer

A)  RuntimeException 
B)  IllegalAccessException 
C)  NoSuchMethodException 
D)  ClassNotFoundException 
E)  none of the above 
A)  RuntimeException 
B)  IllegalAccessException 
C)  NoSuchMethodException 
D)  ClassNotFoundException 
E)  none of the above

Question 5

What is the difference between a checked exception and an unchecked exception?

Accepted Answer

If a program includes a method call that

Question 6

Every line of a(n) __________________ is executed no matter what exceptions are thrown.

Accepted Answer

A)  try block 
B)  call stack trace 
C)  catch block 
D)  interface 
E)  finally block 
A)  try block 
B)  call stack trace 
C)  catch block 
D)  interface 
E)  finally block

Question 7

The Exception class is a subclass of the Object class.

Accepted Answer

A) True 
 B)False

Question 8

An exception will be propagated until it is caught and handled or until it is passed out of the main method.

Accepted Answer

A) True 
 B)False

Question 9

What is the difference between an exception and an error?

Accepted Answer

Exceptions are usually minor p

Question 10

When accessing an element of an array, if the index is outside of the range of the indexes of the array, an exception is thrown.

Accepted Answer

A) True 
 B)False

Question 11

Write a short snippet of code that converts the first element of the String[] args array to an integer. It should catch an exception and print out a message if the first element cannot be converted to an integer.

Accepted Answer

int number;
try {
number = Integer.parse

Question 12

Consider the following code fragment.

int [] a = new int[50];
	a[50] = 100;

Will this code fragment throw an exception?  Explain.

Accepted Answer

This code will throw an ArrayI

Question 13

Every line in a catch block is guaranteed to be executed in all situations.

Accepted Answer

A) True 
 B)False

Question 14

Give two examples of methods in the Exception class that can be used to output information about the Exception.

Accepted Answer

The printStackTrace and the ge

Question 15

How does a method throw an exception?

Accepted Answer

A method throws an e

Question 16

Is an exception an object? Explain.

Accepted Answer

Yes, an exception is an object

Question 17

Write a code fragment that will throw an ArithmeticException. Your code fragment should not use the throw statement.

Accepted Answer

int zero = 0;
int nu

Question 18

A(n) ____________________ is used to identify a block of statements that may cause an exception.

Accepted Answer

A)  call-stack trace 
B)  error 
C)  catch block 
D)  try block 
E)  none of the above 
A)  call-stack trace 
B)  error 
C)  catch block 
D)  try block 
E)  none of the above

Question 19

Which of the following represents the standard input stream?

Accepted Answer

A)  System.in 
B)  System.out 
C)  System.err 
D)  System.instream 
E)  System.outstream 
A)  System.in 
B)  System.out 
C)  System.err 
D)  System.instream 
E)  System.outstream

Question 20

A throw statement is used to begin exception propagation.

Accepted Answer

A) True 
 B)False

Which of the following methods are part of the Exception class and can be used to give information about a thrown exception?

A(n) _____________________ is an object that defines an unusual or erroneous situation that is typically recoverable.

Consider the following code fragment. String s; for(int i = 0; i < s.length(); i++) System.out.println(s.charAt(i)); What exception will be thrown by this code and why?

Which of the following exceptions are unchecked?

What is the difference between a checked exception and an unchecked exception?

Every line of a(n) __________________ is executed no matter what exceptions are thrown.

The Exception class is a subclass of the Object class.

An exception will be propagated until it is caught and handled or until it is passed out of the main method.

What is the difference between an exception and an error?

When accessing an element of an array, if the index is outside of the range of the indexes of the array, an exception is thrown.

Write a short snippet of code that converts the first element of the String[] args array to an integer. It should catch an exception and print out a message if the first element cannot be converted to an integer.

Consider the following code fragment. int [] a = new int[50]; a[50] = 100; Will this code fragment throw an exception? Explain.

Every line in a catch block is guaranteed to be executed in all situations.

Give two examples of methods in the Exception class that can be used to output information about the Exception.

How does a method throw an exception?

Is an exception an object? Explain.

Write a code fragment that will throw an ArithmeticException. Your code fragment should not use the throw statement.

A(n) ____________________ is used to identify a block of statements that may cause an exception.

Which of the following represents the standard input stream?

A throw statement is used to begin exception propagation.

Introduction

Data and Expressions

Using Classes and Objects

Conditionals and Loops

Writing Classes

Graphical User Interfaces

Arrays

Inheritance

Polymorphism

Recursion

Searching and Sorting

Trees

Introduction to Collections and Stacks

Heaps and Priority Queues

Graphs

Filters

Exam 10: Exceptions

Which of the following methods are part of the Exception class and can be used to give information about a thrown exception?

A(n) _____________________ is an object that defines an unusual or erroneous situation that is typically recoverable.

Consider the following code fragment. String s; for(int i = 0; i < s.length(); i++) System.out.println(s.charAt(i)); What exception will be thrown by this code and why?

Which of the following exceptions are unchecked?

What is the difference between a checked exception and an unchecked exception?

Every line of a(n) __________________ is executed no matter what exceptions are thrown.

The Exception class is a subclass of the Object class.

An exception will be propagated until it is caught and handled or until it is passed out of the main method.

What is the difference between an exception and an error?

When accessing an element of an array, if the index is outside of the range of the indexes of the array, an exception is thrown.

Write a short snippet of code that converts the first element of the String[] args array to an integer. It should catch an exception and print out a message if the first element cannot be converted to an integer.

Consider the following code fragment. int [] a = new int[50]; a[50] = 100; Will this code fragment throw an exception? Explain.

Every line in a catch block is guaranteed to be executed in all situations.

Give two examples of methods in the Exception class that can be used to output information about the Exception.

How does a method throw an exception?

Is an exception an object? Explain.

Write a code fragment that will throw an ArithmeticException. Your code fragment should not use the throw statement.

A(n) ____________________ is used to identify a block of statements that may cause an exception.

Which of the following represents the standard input stream?

A throw statement is used to begin exception propagation.

Introduction

Data and Expressions

Using Classes and Objects

Conditionals and Loops

Writing Classes

Graphical User Interfaces

Arrays

Inheritance

Polymorphism

Recursion

Searching and Sorting

Trees

Introduction to Collections and Stacks

Heaps and Priority Queues

Graphs

Filters