Beginning Java Programming Exam Practice Tests
Course Introduction
Beginning Java Programming introduces students to the foundational concepts of computer programming using the Java language. The course covers the basics of writing, compiling, and executing Java programs, including fundamental syntax, data types, control structures, arrays, methods, and object-oriented principles such as classes and objects. Students will develop problem-solving skills through hands-on coding exercises and projects, preparing them to design, implement, and debug simple Java applications. This course is ideal for those new to programming or software development.
Recommended Textbook
Java Software Solutions Foundations of Program Design 7th Edition by John Lewis
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13 Chapters
820 Verified Questions
820 Flashcards
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Page 2
Chapter 1: Introduction
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Sample Questions
Q1) There are a number of reserved words in Java that have no current meaning (denoted with an * in figure 1.18). Why?
Answer: Java language designers anticipate introducing these statements in future versions, but have not yet implemented them because they are lower priority, or it has not been decided how they will be implemented or precisely what they will mean.
Q2) Objects are defined by a class that describes the characteristics common to all instances of the class.
A)True
B)False
Answer: True
Q3) Following Java naming convention, which of the following would be the best name for a class about store customers?
A) StoreCustomer
B) Store Customer
C) storeCustomer
D) STORE_CUSTOMER
E) Store-Customer
Answer: A
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3
Chapter 2: Data and Expressions
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Sample Questions
Q1) Provide three examples of code using assignment statements where one assignment statement would result in a syntax error, one would result in a logical error, and one would result in a run-time error.
Answer: int x = 5.0 / 2.0; // syntax error caused by right side providing a double and the left side wants an int double x = (intValue1 + intValue2) / 2; // logical error caused by not casting the division as a double int x = 5 / (y - y); // run-time error caused by division by 0 when y - y is evaluated
Q2) You specify the shape of an oval in a Java applet by defining the oval's
A) arc locations
B) center and radius
C) bounding box
D) foci
E) none of the above, it is not possible to draw an oval in a Java applet
Answer: C
Q3) Write an output statement which will output the following characters exactly as shown: / ' \" / ' \
Answer: System.out.println("/ \ ' \ \ \" / \ ' \ \ ");
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Chapter 3: Using Classes and Objects
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Sample Questions
Q1) Write a statement using a method to guarantee that the initial will be a capital letter. Answer: firstInitial = firstInitial.toUpperCase( );
Q2) These two ways of setting up a string yield identical results:
a) String string = new String("string");
b) String string = "string";
A)True
B)False Answer: True
Q3) The printf method within System.out is designed to ease the conversion of legacy C code into Java.
A)True
B)False Answer: True
Q4) These two ways of setting up a String yield identical results:
a) String string = new String("123.45");
b) String string = "" + 123.45; A)True
B)False Answer: True
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Chapter 4: Writing Classes
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Sample Questions
Q1) What visibility modifiers would you use for the methods that move the elevator up one floor, move the elevator down one floor, that request the elevator, and that start the elevator moving?
Q2) Java methods can return only primitive types (int, double, float, char, boolean, etc).
A)True
B)False
Q3) What are the objects needed in order to create a Java GUI (graphical user interface)?
A) components
B) events
C) listeners
D) all of the above
E) only classes from AWT and/or Swing are needed
Q4) While multiple objects of the same class can exist, in a given program there can be only one version of each class.
A)True
B)False
Q5) Write the constructor, which is passed the player's name and position.
Q6) Add a constructor to class Box for a cube, which has only 1 parameter, side.
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Chapter 5: Conditionals and Loops
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Sample Questions
Q1) Of the following if statements, which one correctly executes three instructions if the condition is True?
A) if (x < 0) a = b * 2;
Y = x;
Z = a - y;
B) { if (x < 0)
A = b * 2;
Y = x;
Z = a - y;
C) if { (x < 0) a = b * 2;
Y = x;
Z = a - y ;
D) if (x < 0) {
A = b * 2;
Y = x;
Z = a - y;
E) B, C and D are all correct, but not A
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Chapter 6: More Conditionals and Loops
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Sample Questions
Q1) Write a paint method to draw out an American flag. The flag will comprise a blue square in the upper left corner and 13 red and white stripes, starting with red, and alternating. 6 of the 13 stripes appear to the right of the blue square and the last 7 stripes appear beneath the blue square extending as far right as the other stripes. Use a for-loop to draw the stripes. Do not try to draw any stars in the blue square.
Q2) How many times will the following loop iterate?
Int x = 10; Do { System.out.println(x);
X--;
} while (x > 0);
A) 0 times
B) 1 time
C) 9 times
D) 10 times
E) 11 times
Q3) Write a set of code that outputs all of the int values between 1 and 100 with 5 values per line, and each of those 5 values spaced out equally. Use a single for-loop to solve this problem.
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Page 8
Chapter 7: Object-Oriented Design
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Sample Questions
Q1) Any class can implement an interface, but no classes can implement more than a single interface.
A)True
B)False
Q2) Inheritance through an extended (derived) class supports which of the following concepts?
A) interfaces
B) modulary
C) information hiding
D) code reuse
E) correctness
Q3) Write a static method that is passed two ChessPieces and determines if the two pieces are owned by the same player. It should return True or false.
Q4) A border can be put around any Swing component with the exception of a JButton and JScrollPane component.
A)True
B)False
Q5) In what way is black-box testing better than glass-box testing? In what way is glass-box testing better than black-box testing?
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Chapter 8: Arrays
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Sample Questions
Q1) In a two-dimensional array, both dimensions must have the same number of elements, as in[10][10].
A)True
B)False
Q2) Both the Insertion Sort and the Selection Sort algorithms have efficiencies on the order of ________ where n is the number of values in the array being sorted.
A) n
B) n * log n
C) n²
D) n³
E) Insertion sort has an efficiency of n and Selection Sort has an efficiency of n²
Q3) Write code to create a JPanel with 4 JCheckBox GUI components and two JLabels for output, one that says "Current cost is" and the other that outputs the computed cost based on which of the food items has been selected.
Q4) Write a code fragment to create a two-dimensional 10x10 array and initialize every element to be the value of i * j where i and j are the two indices (for instance, element [5][3] is 5 * 3 = 15).
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Chapter 9: Inheritance
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Sample Questions
Q1) An Applet implements MouseMotionListener. Write the mouseMoved and paint methods for an applet that will display the location of the mouse as an (x, y) coordinate. The output should be given at location (10, 10) of the applet no matter where the mouse is.
Q2) Inheritance through an extended (derived) class supports which of the following concepts?
A) interfaces
B) modulary
C) information hiding
D) code reuse
E) correctness
Q3) Using the reserved word, super, one can
A) access a parent class'constructor(s)
B) access a parent class'methods and instance data
C) access a child class'constructor(s)
D) access a child class'methods and instance data
E) none of the above
Q4) Y is a derived class of Z.
A)True
B)False
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Chapter 10: Polymorphism
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Sample Questions
Q1) A JSlider provides a list of String choices that the user can select between.
A)True
B)False
Q2) The showDialog method is part of which class?
A) JOptionPane
B) JColorChooser
C) JTextArea
D) Keyboard
E) all of the above
Q3) Which of the following classes would you use to open a GUI dialog box, which is then used to select a file to open?
A) JOptionPane
B) JTextArea
C) showOpenDialog
D) JFileChooser
E) JFileReader
Q4) Write a set of code that will allow a user to select a file through a JFileChooser and store all items in the String array list to the selected file, closing the file when done.
Q5) Why would you not need to implement a ChangeListener for the JSlider?
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Chapter 11: Exceptions
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Sample Questions
Q1) Write code that will create a BufferedReader object to input from standard input (System.in) an int, a double and a char.
Q2) Assume infile is a BufferedReader for a textfile and that the textfile is empty. What is returned from the message infile.readLine( ); ?
A) 0
B) null
C) a special character known as the End-of-file marker (EOF)
D) none of the above, the message causes a NullPointerException to be thrown E) none of the above, the message causes a EndOfFileException to be thrown
Q3) If an exception arises in a catch statement, and the exception is of the type caught by the catch statement, then the catch statement catches the same exception. For instance, if the following catch statement first catches an ArithmeticException and, while executing, throws another ArithmeticException, it is able to catch the second ArithmeticException as well the first. catch (ArithmeticException ex) {...}
A)True
B)False
Q4) Why might you want to create your own exception class? What purpose would it serve?
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Chapter 12: Recursion
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Sample Questions
Q1) What is the result of bar(a, 8);?
A) 0
B) 5
C) 6
D) 12
E) 34
Q2) Provide a definition for the terms as they relate to programming: recursion, indirect recursion and infinite recursion.
Q3) Describe how to solve the Towers of Hanoi problem using 4 disks (that is, write down move for move how to solve the problem).
Q4) Assume at some point in processing, grid's row 0 has become 3 3 3 1 1 1 0 0. Which direction will next be tried?
A) up
B) down
C) left
D) right
E) none, the recursion ends at this point
Q5) Explain what a "base case" is in a recursive method.
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Page 14
Chapter 13: Collections
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Sample Questions
Q1) Assume Node temp is currently set equal to head. Which of the following while loops could be used to iterate through each element of a linked list?
A) while (head != null) head = temp.next;
B) while (temp != null) temp = temp.next;
C) while (head != null) temp = temp.next;
D) while (head != null) head = head.next;
E) while (temp != null) head = head.next;
Q2) In order to gain a last-in first-out access to data, which type of structure should be used?
A) Vector
B) Array
C) Linked List
D) Queue
E) Stack
Q3) Which of the following instructions would create an initially empty linked list?
A) Node head = new Node( );
B) Node head = Node;
C) Node head = null;
D) Node head = new Node(0);
E) Node head = list;
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