Question 1

The ____ method of the Character class will indicate if a character contains white space.

Accepted Answer

A) isValid() 
B) getChar() 
C) hasNext() 
D) isWhiteSpace() 
A) isValid() 
B) getChar() 
C) hasNext() 
D) isWhiteSpace()

Question 2

Consider the following code snippet.   Which of the following statements about this code is correct?

Accepted Answer

A) This code will read in a word at a time from the input file. 
B) This code will read in a line at a time from the input file. 
C) This code will read in the entire input file in one operation. 
D) This code will read in a character at a time from the input file. 
A) This code will read in a word at a time from the input file. 
B) This code will read in a line at a time from the input file. 
C) This code will read in the entire input file in one operation. 
D) This code will read in a character at a time from the input file.

Question 3

Consider the following code snippet, assuming that description is a String and totalPrice is a double:
System.out.printf("%-12s%8.2f",description,totalPrice);
Which of the following statements is correct?

Accepted Answer

A) This code will produce 2 columns, with the description field left justified and the totalPrice field left justified. 
B) This code will produce 2 columns, with the description field right justified and the totalPrice field left justified. 
C) This code will produce 2 columns, with the description field right justified and the totalPrice field right justified. 
D) This code will produce 2 columns, with the description field left justified and the totalPrice field right justified. 
A) This code will produce 2 columns, with the description field left justified and the totalPrice field left justified. 
B) This code will produce 2 columns, with the description field right justified and the totalPrice field left justified. 
C) This code will produce 2 columns, with the description field right justified and the totalPrice field right justified. 
D) This code will produce 2 columns, with the description field left justified and the totalPrice field right justified.

Question 4

Consider the following code snippet.
PrintWriter outputFile = new PrintWriter("payrollReport.txt");
Which of the following statements about the PrintWriter object is correct?

Accepted Answer

A) If a file named "payrollReport.txt" already exists, a new file named "payrollReport_1.txt" will be created and used. 
B) If a file named "payrollReport.txt" already exists, an exception will occur. 
C) If a file named "payrollReport.txt" already exists, existing data will be deleted before new data are added to the file. 
D) If a file named "payrollReport.txt" already exists, new data will be added to the end of the file. 
A) If a file named "payrollReport.txt" already exists, a new file named "payrollReport_1.txt" will be created and used. 
B) If a file named "payrollReport.txt" already exists, an exception will occur. 
C) If a file named "payrollReport.txt" already exists, existing data will be deleted before new data are added to the file. 
D) If a file named "payrollReport.txt" already exists, new data will be added to the end of the file.

Question 5

Insert the missing code in the following code fragment.This fragment is intended to read all words from a text file named dataIn.txt.

Accepted Answer

A) in.getNext() 
B) in.nextWord() 
C) in.hasNext() 
D) in.peek() 
A) in.getNext() 
B) in.nextWord() 
C) in.hasNext() 
D) in.peek()

Question 6

Which of the following statements about checked and unchecked exceptions is true?

Accepted Answer

A) Checked exceptions are handled by the Java runtime. 
B) The compiler ensures that the program is handling unchecked exceptions. 
C) The compiler ensures that the program is handling checked exceptions. 
D) All exceptions that are descendants of RunTimeException are checked exceptions. 
A) Checked exceptions are handled by the Java runtime. 
B) The compiler ensures that the program is handling unchecked exceptions. 
C) The compiler ensures that the program is handling checked exceptions. 
D) All exceptions that are descendants of RunTimeException are checked exceptions.

Question 7

Which of the following statements about exception handling is recommended?

Accepted Answer

A) Throw an exception as soon as a problem is detected, but only catch exceptions when the problem can be handled. 
B) All exceptions should be handled at the top of the chain of methods. 
C) All exceptions should be handled where they are first detected. 
D) Throw an exception only when the problem can be handled. 
A) Throw an exception as soon as a problem is detected, but only catch exceptions when the problem can be handled. 
B) All exceptions should be handled at the top of the chain of methods. 
C) All exceptions should be handled where they are first detected. 
D) Throw an exception only when the problem can be handled.

Question 8

Consider the following code snippet, assuming in is an instantiated Scanner:   Which of the following statements about this code is correct?

Accepted Answer

A) The program will display the message "End of file expected" if there is no data. 
B) The program will throw an exception if there is no data. 
C) The program will display the message "End of file expected" if there is data left in the input when the if statement is executed. 
D) The program will throw an exception if there is data left in the input when the if statement is executed. 
A) The program will display the message "End of file expected" if there is no data. 
B) The program will throw an exception if there is no data. 
C) The program will display the message "End of file expected" if there is data left in the input when the if statement is executed. 
D) The program will throw an exception if there is data left in the input when the if statement is executed.

The ____ method of the Character class will indicate if a character contains white space.

Consider the following code snippet. Which of the following statements about this code is correct?

Consider the following code snippet, assuming that description is a String and totalPrice is a double: System.out.printf("%-12s%8.2f",description,totalPrice); Which of the following statements is correct?

Consider the following code snippet. PrintWriter outputFile = new PrintWriter("payrollReport.txt"); Which of the following statements about the PrintWriter object is correct?

Insert the missing code in the following code fragment.This fragment is intended to read all words from a text file named dataIn.txt.

Which of the following statements about checked and unchecked exceptions is true?

Which of the following statements about exception handling is recommended?

Consider the following code snippet, assuming in is an instantiated Scanner: Which of the following statements about this code is correct?

Introduction

Using Objects

Implementing Classes

Fundamental Data Types

Decisions

Loops

Arrays and Array Lists

Designing Classes

Inheritance

Interfaces

Object-Oriented Design

Recursion

Sorting and Searching

The Java Collections Framework

Basic Data Structures

Tree Structures

Generic Classes

Stream Processing

Graphical User Interfaces

Advanced Input/Output

Multithreading

Internet Networking

Relational Databases

XML

Filters

Exam 11: Input/Output and Exception Handling

The ____ method of the Character class will indicate if a character contains white space.

Consider the following code snippet. Which of the following statements about this code is correct?

Consider the following code snippet, assuming that description is a String and totalPrice is a double: System.out.printf("%-12s%8.2f",description,totalPrice); Which of the following statements is correct?

Consider the following code snippet. PrintWriter outputFile = new PrintWriter("payrollReport.txt"); Which of the following statements about the PrintWriter object is correct?

Insert the missing code in the following code fragment.This fragment is intended to read all words from a text file named dataIn.txt.

Which of the following statements about checked and unchecked exceptions is true?

Which of the following statements about exception handling is recommended?

Consider the following code snippet, assuming in is an instantiated Scanner: Which of the following statements about this code is correct?

Introduction

Using Objects

Implementing Classes

Fundamental Data Types

Decisions

Loops

Arrays and Array Lists

Designing Classes

Inheritance

Interfaces

Object-Oriented Design

Recursion

Sorting and Searching

The Java Collections Framework

Basic Data Structures

Tree Structures

Generic Classes

Stream Processing

Graphical User Interfaces

Advanced Input/Output

Multithreading

Internet Networking

Relational Databases

XML

Filters