1. (TCOs 16) The data displayed in a JTable can be provided by a _____ object. (Points : 4) TableModel GridModel DefaultTableModel TableGridModel Question 2. 2. (TCOs 16) What is the output of the code below? double num = 56.4321; System.out.printf("%.2f", 56.4321); (Points : 4) %.2f %.2f56.4321 56.43 56.4321 Question 3. 3. (TCOs 16) Arguments to methods always appear within (Points : 4) brackets. parentheses. quotation marks. curly braces. Question 4. 4. (TCOs 16) Assume int[ ] t = {1, 2, 3, 4}. What is t.length? (Points : 4) 5 4 0 3 Question 5. 5. (TCOs 1 ,2, and 6) If a class contains a main method, that method is executed (Points : 4) automatically when the class is run. when another method within the class calls it. when an object is created from the class. None of the above Question 6. 6. (TCOs 16) Invoking _____ returns the first element in an ArrayList x. (Points : 4) x.get(1) x.get() x.get(0) x.first() Question 7. 7. (TCOs 1, 4, and 6) Consider a form with a ButtonGroup with three radio buttons, and two check boxes. What is the total number of radio buttons and check boxes that can be selected at any time? (Points : 4) 5 4 3 2 Question 8. 8. (TCOs 16) Which statements are most accurate regarding the following classes? class A { private int i; protected int j; } class B extends A { private int k; protected int m; } (Points : 4) An object of B contains data fields j, m. An object of B contains data fields j, k, m. An object of B contains data fields k, m. An object of B contains data fields i, j, k, m. Question 9. 9. (TCOs 16) Suppose ArrayList x contains two strings [Beijing, Singapore]. Which of the following methods will cause the list to become [Beijing, Chicago, Singapore]? (Points : 4) x.add("Chicago") x.add(2, "Chicago") x.add(0, "Chicago") x.add(1, "Chicago") Question 10. 10. (TCOs 1, 5, and 6) Which statement sets up a tokens object that will use the % as a field delimiter? (Points : 4) tokens = StringTokenizer(inputString, "%"); tokens = new StringTokenizer(inputString, "%"); tokens = StringTokenizer("%", inputString); tokens = new StringTokenizer("%", inputString); Question 11. 11. (TCOs 16) The title of a JFrame can be set by using which statement in the constructor of your class that extends JFrame? (Points : 4) super(Title here); setFrameTitle(Title here); setTitleFrame(Title here); JFrame.super(Title here); Question 12. 12. (TCOs 1, 5, and 6) Which type of exception occurs if the write method of BufferedWriter cannot write data to the file? (Points : 4) WriteException IOException FileIOException FileException Question 13. 13. (TCOs 16) Suppose a JFrame uses the GridLayout(0, 2). If you add six buttons to the frame, how many rows are displayed? (Points : 4) 2 3 1 4 Question 14. 14. (TCOs 16) The interface _____ should be implemented to listen for a button action event. (Points : 4) FocusListener ContainerListener ActionListener WindowListener Question 15. 15. (TCOs 16) The _____ method of JOptionPane is used to display a message dialog box. (Points : 4) showMessage displayMessageDialog showMessageDialog displayMessage Question 16. 16. (TCOs 1 ,4, and 6) A JMenu component can contain one or more _____ components. (Points : 4) JMenuItem JMenuBar FileMenu BarMenu Question 17. 17. (TCOs 16) When implementing a method, use the classs set and get methods to access the classs _____ data. (Points : 4) public private protected All of them Question 18. 18. (TCOs 1, 4, and 6) Each tab of a JTabbedPane is assigned an index; the first tab has an index of (Points : 4) -1. 0. 1. 2. Question 19. 19. (TCOs 16) A constructor cannot (Points : 4) be overloaded. initialize variables to their defaults. specify return types or return values. have the same name as the class. Question 20. 20. (TCOs 16) Given the declaration Circle x = new Circle(), which of the following statements is most accurate? (Points : 4) x contains an int value. You can assign an int value to x. x contains an object of the Circle type. x contains a reference to a Circle object.