Flag this Question

Question 14 pts

(TCOs 16) The component that can be used to display query results from a database in a grid of rows and columns is

JTable.

JGrid.

DBTable.

DBGrid.

Flag this Question

Question 24 pts

(TCOs 16) What is the output of the code below? double num = 56.4321; System.out.printf("%.2f", 56.4321);

%.2f

%.2f56.4321

56.43

56.4321

Flag this Question

Question 34 pts

(TCOs 16) The signature of a method consists of

method name and parameter list.

return type

method name.

parameter list.

Flag this Question

Question 44 pts

(TCOs 16) Assume int[ ] t = {1, 2, 3, 4}. What is t.length?

5

4

0

3

Flag this Question

Question 54 pts

(TCOs 1, 2, and 6) A key part of enabling the JVM to locate and call method main to begin the apps execution is the _____ keyword, which indicates that main can be called without first creating an object of the class in which the method is declared.

class

private

static

public

Flag this Question

Question 64 pts

(TCOs 16) Invoking _____ returns the first element in an ArrayList x.

x.get(1)

x.get()

x.get(0)

x.first()

Flag this Question

Question 74 pts

(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?

5

4

3

2

Flag this Question

Question 84 pts

(TCOs 16) Analyze the following code. public class Test { int x; public Test(String t) { System.out.println("Test"); } public static void main(String[ ] args) { Test test = null; System.out.println(test.x); } }

The program has a compile error because x has not been initialized.

The program has a runtime NullPointerException because test is null while executing test.x.

The program has a compile error because test is not initialized.

The program has a compile error because Test does not have a default constructor.

Flag this Question

Question 94 pts

(TCOs 16) Suppose ArrayList x contains two strings [Beijing, Singapore]. Which of the following methods will cause the list to become [Beijing, Chicago, Singapore]?

x.add("Chicago")

x.add(2, "Chicago")

x.add(0, "Chicago")

x.add(1, "Chicago")

Flag this Question

Question 104 pts

(TCOs 1, 5, and 6) Which statement sets up a tokens object that will use the % as a field delimiter?

tokens = StringTokenizer(inputString, "%");

tokens = new StringTokenizer(inputString, "%");

tokens = StringTokenizer("%", inputString);

tokens = new StringTokenizer("%", inputString);

Flag this Question

Question 114 pts

(TCOs 16) The title of a JFrame can be set by using which statement in the constructor of your class that extends JFrame?

super(Title here);

setFrameTitle(Title here);

setTitleFrame(Title here);

JFrame.super(Title here);

Flag this Question

Question 124 pts

(TCOs 1, 5, and 6) Which type of exception occurs if the file cannot be created by a FileWriter object?

FileError

FileException

FileIOException

IOException

Flag this Question

Question 134 pts

(TCOs 16) What layout manager should you use so that every component occupies the same size in the container?

any layout

a FlowLayout

a BorderLayout

a GridLayout

Flag this Question

Question 144 pts

(TCOs 16) The _____ method of an event object returns the object that caused the event.

getSource()

getEvent()

getEventObject()

getWhen()

Flag this Question

Question 154 pts

(TCOs 16) The datatype returned by the JOptionPane.showInputDialog method is

String.

int.

double.

specified by the user in the method call.

Flag this Question

Question 164 pts

(TCOs 1, 4, and 6) Menus are attached to windows by calling the _____ method.

addMenuBar

setJMenuBar

setMenu

addJMenuBar

Flag this Question

Question 174 pts

(TCOs 16) Set methods are also commonly called _____ methods, and get methods are also commonly called _____ methods.

query, mutator.

accessor, mutator.

mutator, accessor.

query, accessor.

Flag this Question

Question 184 pts

(TCOs 1, 4, and 6) The method used to add panels to a JTabbedPane is

newTab.

newPanel.

addPanel.

addTab.

Flag this Question

Question 194 pts

(TCOs 16) A programmer-defined constructor that has no arguments is called a(n)

empty constructor.

no-argument constructor.

default constructor.

null constructor.

Flag this Question

Question 204 pts

(TCOs 16) A method that is associated with an individual object is called

an object method.

an instance method.

a class method.

a static method.