Application Development with Java Exam Materials
Course Introduction
Application Development with Java introduces students to the principles and practices of building robust, scalable, and efficient applications using the Java programming language. The course covers core Java concepts, including object-oriented programming, data structures, exception handling, and graphical user interfaces. Learners will explore Java libraries and frameworks, best practices for software design, and techniques for developing desktop and web-based applications. Through hands-on projects and assignments, students will gain practical experience in designing, coding, testing, and debugging Java applications, preparing them for real-world software development challenges.
Recommended Textbook
Java Programming 7th Edition by Joyce Farrell
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17 Chapters
1208 Verified Questions
1208 Flashcards
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Page 2
Chapter 1: Creating Java Programs
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68 Flashcards
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Sample Questions
Q1) Series of characters that will appear in output exactly as entered
A)literal string
B)high-level programming languages
C)dialog box
D)syntax
E)whitespace
F)compiler
G)attributes
H)Machine language
I)Java virtual machine (JVM)
Answer: A
Q2) If you receive an error that states, "Exception in thread 'main' java.lang.NoClassDefFoundError," when you try to execute the application, you probably do not have your ____ set correctly.
A) class length
B) class path
C) java
D) object
Answer: B
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Page 3
Chapter 2: Using Data
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Sample Questions
Q1) A variable can hold more than one value at a time.
A)True
B)False
Answer: False
Q2) What is the difference between the float data type and the double data type?
Answer: Java supports two floating-point data types: float and double. A float data type can hold floating-point values of up to six or seven significant digits of accuracy. A double data type requires more memory than a float, and can hold 14 or 15 significant digits of accuracy. The term significant digits refers to the mathematical accuracy of a value. For example, a float given the value 0.324616777 displays as 0.324617 because the value is accurate only to the sixth decimal position.
Q3) The term parse means to break into component parts.
A)True
B)False
Answer: True
Q4) A(n) ____________________ operator compares two items and the result has a Boolean value.
Answer: relational comparison
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Chapter 3: Using Methods, Classes, and Objects
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Sample Questions
Q1) You can identify a class that is an application because it contains a public static void main() method.
A)True
B)False
Answer: True
Q2) Methods use memory locations to hold values of variables. Describe the process of memory allocation and variable scope.
Answer: Each time a method executes, memory locations are assigned. They hold copies of the values that were passed to it by the main() method. When the method reaches the closing curly brace, the method ends and the variable ceases to exist. The memory location that held the value is released at the end of the method, and changes made to its value do not affect values in the calling method. When a variable ceases to exist at the end of a method, programmers say the variable "goes out of scope." A variable's scope is the part of a program in which a variable exists and can be accessed using its unqualified name.
Q3) Normally, you declare constructors to be ____________________ so that other classes can instantiate objects that belong to the class.
Answer: public
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Chapter 4: More Object Concepts
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Sample Questions
Q1) int aMethod(int x)
void aMethod(int x)
In the above statements, explain why these two methods are illegal in the class.
Q2) An illegal action
A)optional classes
B)instance variables
C)comes into scope
D)class methods
E)overloading
F)Math class
G)redeclaring a variable
H)GregorianCalendar
I)constant
Q3) It is a convenience to be able to use one reasonable name for ____ that are functionally identical except for argument types.
A) arguments
B) classes
C) tasks
D) packages
Q4) What are the four types of nested classes?
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Chapter 5: Making Decisions
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Sample Questions
Q1) Statements in which an if structure is contained inside another if structure are commonly called ____ if statements.
A) nested
B) logical
C) blocked
D) inside
Q2) Within an if or an else statement, how can you code as many dependent if statements as you need?
Q3) The ____ operator is written as the exclamation point ( ! ).
A) equality
B) AND
C) assignment
D) NOT
Q4) List and explain the keywords used with the switch statement.
Q5) You write pseudocode in everyday language, not the syntax used in a programming language.
A)True
B)False
Q6) Why would a programmer need to use a range check? Give an example.
Q7) Why do programmers use pseudocode?
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Chapter 6: Looping
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Sample Questions
Q1) A(n) ____ loop is a special loop that is used when a definite number of loop iterations is required.
A) while
B) for
C) else
D) do while
Q2) How are nested loops implemented in a loop structure?
Q3) Create an indefinite while loop that will validate that the loop control variable named userNum is less than the constant MAXVALUE. While true, create a println statement to output "Please enter a higher value". Once MAXVALUE is reached, create a final println statement that will output "Max value reached".
Q4) On many keyboards, the Break key is also the ____ key.
A) Pause
B) Esc
C) Delete
D) Ctrl
Q5) Programmers rarely use indefinite loops when validating input data.
A)True
B)False
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Chapter 7: Characters, Strings, and the Stringbuilder
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Sample Questions
Q1) Returns the lowercase equivalent of the argument
A)parseDouble()
B)toLowerCase()
C)substring()
D)String variable
E)append()
F)buffer
G)setLength()
H)indexOf()
I)insert()
Q2) The ____ method lets you add characters at a specific location within a StringBuilder object.
A) charAt()
B) insert()
C) append()
D) setCharAt()
Q3) What is a wrapper and why would you use it?
Q4) Describe how a reference is used in Java.
Q5) Strings that cannot be changed are said to be immutable. What does this mean and how does it relate to values held in memory addresses?
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Chapter 8: Arrays
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Sample Questions
Q1) Which of the following statements correctly initializes an array with an initialization list?
A) int[] nums = {2, 4, 8};
B) int[] nums = (2, 4, 8);
C) int nums = [2, 4, 8];
D) int nums() = int{2, 4, 8}
Q2) The following statement declares an array: int[] increaseValues = new int[5]
final int PLUSTWO = 2;
Create a loop that will add 2 to every array element. Use a symbolic constant named PLUSTWO and use the length field in the loop that will contain the number of elements in the array.
Q3) A(n) ____ loop allows you to cycle through an array without specifying the starting and ending points for the loop control variable.
A) do while
B) inner
C) enhanced for D) enhanced while
Q4) How can you use the enhanced for loop?
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Chapter 9: Advanced Array Concepts
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Sample Questions
Q1) When you pass a two-dimensional array to a method, you pass the array name just as you do with a one-dimensional array.
A)True
B)False
Q2) Arrays with more than one dimension; allowed in Java
A)ragged array
B)bubble sort
C)static methods
D)two-dimensional array
E)add() method
F)Enumerated data type
G)set() method
H)multidimensional array
I)java.util
Q3) The simplest possible sort involves two values that are out of order.
A)True
B)False
Q4) What are some of the advantages of creating an enumeration type?
Q5) The Arrays class ____________________ method assigns the specified value to each element of the specified array.
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Chapter 10: Introduction to Inheritance
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Sample Questions
Q1) public class Student
{ private String firstName; private String lastName; private String address; private String username; public Student(String ____, String ____, String ____, String ____)
In the shaded areas provided, create a constructor that accepts the values of the student's first name, last name, address, and username. Use these values to set the initial state of the object.
Q2) What is information hiding and how is it used?
Q3) How is the keyword protected used?
Q4) The term ____________________ means "many forms."
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Chapter 11: Advanced Inheritance Concepts
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Sample Questions
Q1) Java does not allow a class to inherit directly from two or more parents.
A)True
B)False
Q2) If you attempt to instantiate an object from an abstract class, you receive an error message from the compiler that you have committed a(n) ____.
A) LogicError
B) InstantiationError
C) SyntaxError
D) ObjectError
Q3) The ___ method is useful in debugging a program because it can be used to display and examine values.
A) finalize()
B) toString()
C) notify()
D) equals()
Q4) Nonabstract classes from which objects can be instantiated are called constant classes.
A)True
B)False
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Chapter 12: Exception Handling
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Sample
Questions
Q1) In the case where a method might throw more than one exception type, you specify a list of potential exceptions in the method header by separating them with ____.
A) spaces
B) semicolons
C) commas
D) periods
Q2) What things might a programmer do to cause a potential exception in a program?
Q3) Applications designed so that they continue to operate when some part of the system fails
A)Throwable
B)Exception(String message)
C)exception handling
D)syntactic salt
E)mission critical
F)Exception(Throwable cause)
G)fault-tolerant
H)assert statement
I)try block
Q4) How is an Error class different from an Exception class?
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Chapter 13: File Input and Output
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Sample Questions
Q1) Java's Path class is used to create objects that contain information about files and directories, while the Files class performs operations on files and directories.
A)True
B)False
Q2) Functions as a pipeline or channel between a Java program and an input device
A)batch processing
B)root
C)buffer
D)flushing
E)stream
F)System.getProperty("line.separator")
G)data file
H)close the files
I)BufferedWriter
Q3) Even if you simply want to display records in order based on their key field, you still need to create a random access file.
A)True
B)False
Q4) Provide an example of batch processing.
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Chapter 14: Introduction to Swing Components
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Sample Questions
Q1) Write the statement to create a JButton named submitButton with the label "Submit your data".
Q2) What is the immediate parent class of JTextField?
A) JTextComponent
B) JComponent
C) Container
D) JFrame
Q3) You use the ____ method to obtain the title of a JFrame.
A) getTitle()
B) title()
C) setTitle()
D) setVisible()
Q4) The ____________________ layout manager places components in a row, and when a row is filled, it automatically spills components into the next row.
Q5) The ActionListener interface contains the ____ method specification.
A) actionOccurred(Action e)
B) actionPerformed(ActionEvent e)
C) actionEvent(ActionEvent e)
D) action(Event e)
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Chapter 15: Advanced Gui Topics
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Sample Questions
Q1) What is a mnemonic? Provide an example of adding a mnemonic.
Q2) A common mistake when using BorderLayout is to add a Component to a content pane or frame without naming a region, resulting in some of the components not being visible.
A)True
B)False
Q3) Which of the following is NOT a method of the KeyListener interface?
A) keyTyped()
B) keyPressed()
C) keyClicked()
D) keyReleased()
Q4) Any component you place on the screen has a vertical, or x-axis, position as well as a horizontal, or y-axis, position in the window.
A)True
B)False
Q5) Write the code to create a scroll pane named myScroll that will display an image named scenery with a vertical scroll bar always present and a horizontal scroll bar as needed.
Q6) How do you find the red, green, and blue components of a color?
Q7) When do you need to worry about using the getContentPane() method?
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Chapter 16: Graphics
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Sample Questions
Q1) The position of a component can be changed by using the ____ method and passing it x- and y-coordinate positions.
A) drawString()
B) setLocation()
C) fillArc()
D) repaint()
Q2) A Color class constant
A)fill pattern
B)GREEN
C)acyclic gradient
D)3D method
E)Line2D.Float class
F)fillPolygon()
G)getScreenResolution()
H)GeneralPath
I)descent
Q3) What parameters does the copyArea() method require?
Q4) The draw3DRect() method is used to draw rectangles that appear to have "shadowing" on two of their edges. Five arguments are used to create shadowed rectangles. Describe the five arguments.
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Chapter 17: Applets, Images, and Sound
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Sample Questions
Q1) The ____ provides image-manipulation capabilities.
A) Java Speech API
B) Java Media Framework (JMF)
C) Java 3D API
D) Java Advanced Imaging API
Q2) What are the methods of the applet life cycle?
Q3) Describes the use of sound, images, graphics, and video in computer programs
A)current version of HTML
B)init()
C)start()
D)HTML
E)Applet Viewer
F)tags
G)multimedia
H)applet
I)play()
Q4) You do not use the java command to execute an applet.
A)True
B)False
Q5) Describe the two methods for running an applet.
Page 19
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