Question 1

The input to a method is called a(n) _______________.

Accepted Answer

A)  overloaded 
B)  parameter 
C)  interface 
D)  procedure 
A)  overloaded 
B)  parameter 
C)  interface 
D)  procedure

Question 2

Which method checks whether a point lies within the rectangle?

Accepted Answer

A)  add 
B)  getBounds 
C)  translate 
D)  contains 
A)  add 
B)  getBounds 
C)  translate 
D)  contains

Question 3

Based on the following code, which of the following statements sets the frame to a width of 400 and a height of 200: final int FRAME_WIDTH = 400;
Final int FRAME_HEIGHT = 200;
JFrame frame = new JFrame();

Accepted Answer

A)  frame.size = (FRAME_WIDTH, FRAME_HEIGHT); 
B)  frame.addSize(FRAME_WIDTH, FRAME_HEIGHT); 
C)  frame.setSize(FRAME_WIDTH, FRAME_HEIGHT); 
D)  frame.setSize(FRAME_HEIGHT, FRAME_WIDTH); 
A)  frame.size = (FRAME_WIDTH, FRAME_HEIGHT); 
B)  frame.addSize(FRAME_WIDTH, FRAME_HEIGHT); 
C)  frame.setSize(FRAME_WIDTH, FRAME_HEIGHT); 
D)  frame.setSize(FRAME_HEIGHT, FRAME_WIDTH);

Question 4

Complete the following statement, which constructs an ellipse. Ellipse2D.Double ellipse =
New ____________________ (x, y, width, height);

Accepted Answer

A)  Double.Ellipse2D 
B)  Ellipse2D.Double 
C)  Ellipse2D 
D)  Double 
A)  Double.Ellipse2D 
B)  Ellipse2D.Double 
C)  Ellipse2D 
D)  Double

Question 5

Place drawing instructions inside the __________ method, which is called whenever the component needs to be repainted.

Accepted Answer

A)  paintComponent 
B)  draw 
C)  paint 
D)  drawComponent 
A)  paintComponent 
B)  draw 
C)  paint 
D)  drawComponent

Question 6

Which of the following represents a method declaration with a void return type?

Accepted Answer

A)  public void setValue(int value) { ... } 
B)  public void int getValue() { ... } 
C)  void public setValue(int value) { ... } 
D)  void int getValue() { ... } 
A)  public void setValue(int value) { ... } 
B)  public void int getValue() { ... } 
C)  void public setValue(int value) { ... } 
D)  void int getValue() { ... }

Question 7

Which is not a method of the String class?

Accepted Answer

A)  length 
B)  toUpperCase 
C)  toLowerCase 
D)  println 
A)  length 
B)  toUpperCase 
C)  toLowerCase 
D)  println

Question 8

By convention, variables begin with a(n) _____________.

Accepted Answer

A)  uppercase letter 
B)  digit 
C)  lowercase letter 
D)  dollar sign 
A)  uppercase letter 
B)  digit 
C)  lowercase letter 
D)  dollar sign

Question 9

Which of the following statements about classes is correct?

Accepted Answer

A)  By convention, class names begin with a lowercase letter. 
B)  A class declares the methods that you can apply to its objects. 
C)  All entities, even primitive numbers, are classes. 
D)  A class is a sequence of instructions that accesses the data of an object. 
A)  By convention, class names begin with a lowercase letter. 
B)  A class declares the methods that you can apply to its objects. 
C)  All entities, even primitive numbers, are classes. 
D)  A class is a sequence of instructions that accesses the data of an object.

Question 10

Complete this code fragment to ensure that the frame is shown: JFrame frame = new JFrame();

Accepted Answer

A)  frame.setVisible(true); 
B)  frame.visible = true; 
C)  JFrame.setVisible(); 
D)  frame.setVisible(); 
A)  frame.setVisible(true); 
B)  frame.visible = true; 
C)  JFrame.setVisible(); 
D)  frame.setVisible();

Question 11

What is the output of the following code:
Int num1 = 6;
Int num2 = 10;
num1 = num2;
num2 = num1;
System.out.println(num1 + ", " + num2);

Accepted Answer

A)  6, 10 
B)  10, 6 
C)  6, 6 
D)  10, 10 
A)  6, 10 
B)  10, 6 
C)  6, 6 
D)  10, 10

Question 12

Which statement declares a variable that references a Circle of radius 3?

Accepted Answer

A)  Circle c = Circle(3) 
B)  Circle c = new Circle(3); 
C)  Circle c.new.Circle(3); 
D)  c.Circle(3); 
A)  Circle c = Circle(3) 
B)  Circle c = new Circle(3); 
C)  Circle c.new.Circle(3); 
D)  c.Circle(3);

Question 13

Assuming the following Java statement:
Int num = 10;
What does the variable num store?

Accepted Answer

A)  A reference to the memory location where the value 10 is stored. 
B)  A reference to the int primitive type. 
C)  An object representing the number 10. 
D)  The numeric value 10. 
A)  A reference to the memory location where the value 10 is stored. 
B)  A reference to the int primitive type. 
C)  An object representing the number 10. 
D)  The numeric value 10.

Question 14

Which import statement allows for the use of the Rectangle class?

Accepted Answer

A)  import java.geom.Rectangle2D; 
B)  import java.geom.Rectangle; 
C)  import java.geom.RectangularShape; 
D)  import java.awt.Rectangle; 
A)  import java.geom.Rectangle2D; 
B)  import java.geom.Rectangle; 
C)  import java.geom.RectangularShape; 
D)  import java.awt.Rectangle;

Question 15

Which statement declares a variable that will store an integer value?

Accepted Answer

A)  integer count; 
B)  int count; 
C)  count = 5; 
D)  String count = 5; 
A)  integer count; 
B)  int count; 
C)  count = 5; 
D)  String count = 5;

Question 16

Which of the following statements about methods is correct?

Accepted Answer

A)  A method is a sequence of instructions that could access the data of an object 
B)  A method name is unique across the entire program. 
C)  A method can be called on any object in any class. 
D)  Methods are stored in variables. 
A)  A method is a sequence of instructions that could access the data of an object 
B)  A method name is unique across the entire program. 
C)  A method can be called on any object in any class. 
D)  Methods are stored in variables.

Question 17

What is the type of an object?

Accepted Answer

A)  variable 
B)  method 
C)  reference 
D)  class 
A)  variable 
B)  method 
C)  reference 
D)  class

Question 18

What is the nickname for the graphical user interface library in Java?

Accepted Answer

A)  Applet 
B)  GUI 
C)  JComponent 
D)  Swing 
A)  Applet 
B)  GUI 
C)  JComponent 
D)  Swing

Question 19

Which class is part of the java.lang package?

Accepted Answer

A)  Rectangle 
B)  PrintStream 
C)  String 
D)  Circle 
A)  Rectangle 
B)  PrintStream 
C)  String 
D)  Circle

Question 20

What does API stand for?

Accepted Answer

A)  Applet Programming Interface 
B)  Application Programmer Interaction 
C)  Application Programming Instance 
D)  Application Programming Interface 
A)  Applet Programming Interface 
B)  Application Programmer Interaction 
C)  Application Programming Instance 
D)  Application Programming Interface

Exam 2: Using Objects

The input to a method is called a(n) _______________.

Which method checks whether a point lies within the rectangle?

Based on the following code, which of the following statements sets the frame to a width of 400 and a height of 200: final int FRAME_WIDTH = 400; Final int FRAME_HEIGHT = 200; JFrame frame = new JFrame();

Complete the following statement, which constructs an ellipse. Ellipse2D.Double ellipse = New ____________________ (x, y, width, height);

Place drawing instructions inside the __________ method, which is called whenever the component needs to be repainted.

Which of the following represents a method declaration with a void return type?

Which is not a method of the String class?

By convention, variables begin with a(n) _____________.

Which of the following statements about classes is correct?

Complete this code fragment to ensure that the frame is shown: JFrame frame = new JFrame();

What is the output of the following code: Int num1 = 6; Int num2 = 10; num1 = num2; num2 = num1; System.out.println(num1 + ", " + num2);

Which statement declares a variable that references a Circle of radius 3?

Assuming the following Java statement: Int num = 10; What does the variable num store?

Which import statement allows for the use of the Rectangle class?

Which statement declares a variable that will store an integer value?

Which of the following statements about methods is correct?

What is the type of an object?

What is the nickname for the graphical user interface library in Java?

Which class is part of the java.lang package?

What does API stand for?

Introduction

Implementing Classes

Fundamental Data Types

Decisions

Loops

Arrays and Array Lists

Designing Classes

Inheritance

Interfaces

Inputoutput and Exception Handling

Object-Oriented Design

Recursion

Sorting and Searching

The Java Collections Framework

Basic Data Structures

Tree Structures

Generic Classes

Graphical User Interfaces

Streams and Binary Inputoutput

Multithreading

Internet Networking

Relational Databases

XML

Web Applications

Filters