Question 1

As presented in the Software Failure, the root cause of the Mars Climate Orbiter problem was

Accepted Answer

A)  the cost of the project 
B)  an inability to track the orbiter at long distances 
C)  atmospheric friction 
D)  a communication issue between subsystems 
E)  none of the above 
A)  the cost of the project 
B)  an inability to track the orbiter at long distances 
C)  atmospheric friction 
D)  a communication issue between subsystems 
E)  none of the above D

Question 2

A cast is required in which of the following situations?

Accepted Answer

A)  using charAt to take an element of a String and store it in a char 
B)  storing an int in a float 
C)  storing a float in a double 
D)  storing a float in an int 
E)  all of the above require casts 
A)  using charAt to take an element of a String and store it in a char 
B)  storing an int in a float 
C)  storing a float in a double 
D)  storing a float in an int 
E)  all of the above require casts D

Question 3

If String a = "ABCD" and String b = "abcd" then a.equals(b); returns false but a.equalsIgnoreCase(b); returns True.

Accepted Answer

A) True 
 B)False  True

Question 4

In order to create a constant, you would use which of the following Java reserved words?

Accepted Answer

A)  private 
B)  static 
C)  int 
D)  final 
E)  class 
A)  private 
B)  static 
C)  int 
D)  final 
E)  class

Question 5

If the String major = "Computer Science", what is returned by major.charAt(1)?

Accepted Answer

A)  'C' 
B)  'o' 
C)  'm' 
D)  "C" 
E)  "Computer" 
A)  'C' 
B)  'o' 
C)  'm' 
D)  "C" 
E)  "Computer"

Question 6

Use the following class definition to answer the questions below.
 public class Questions1_4
 {
 public static void main(String[ ] args)
 {
 System.out.print("Here");
 System.out.println("There " + "Everywhere");
 System.out.println("But not" + "in Texas");
 }
 }
-If you want to output the text "hi there", including the quote marks, which of the following could do that?

Accepted Answer

A)  System.out.println("hi there"); 
B)  System.out.println(""hi there""); 
C)  System.out.println("\"hi there"); 
D)  System.out.println("\"hi there\""); 
E)  none, it is not possible to output a quote mark because it is used to mark the beginning and ending of the String to be output 
A)  System.out.println("hi there"); 
B)  System.out.println(""hi there""); 
C)  System.out.println("\"hi there"); 
D)  System.out.println("\"hi there\""); 
E)  none, it is not possible to output a quote mark because it is used to mark the beginning and ending of the String to be output

Question 7

If String name = "George W. Bush"; then the instruction name.length( ); will return 14.

Accepted Answer

A) True 
 B)False

Question 8

Write an output statement which will output the following characters exactly as shown: / ' \" / ' \

Accepted Answer

System.out

Question 9

Given two points in an applet represented by the four int variables x1, y1, x2 and y2, write a paint method to draw a line between the two points and write the location of the two points next to the two points.

Accepted Answer

public void paint(Graphics pag

Question 10

How do the statements "import java.util.*;" and "import java.util.Random;" differ from each other?

Accepted Answer

In the former, all of the classes define

Question 11

Using getCurrencyInstance( ) formats a variable, automatically inserting

Accepted Answer

A)  decimal point for cents 
B)  dollar sign 
C)  percent sign 
D)  all three 
E)  A and B but not C 
A)  decimal point for cents 
B)  dollar sign 
C)  percent sign 
D)  all three 
E)  A and B but not C

Question 12

Which of the following is True regarding the mod operator, %?

Accepted Answer

A)  It can only be performed on int values and its result is a double 
B)  It can only be performed on int values and its result is an int 
C)  It can only be performed on float or double values and its result is an int 
D)  It can only be performed on float or double values and its result is a double 
E)  It can be performed on any numeric values, and the result always is numeric 
A)  It can only be performed on int values and its result is a double 
B)  It can only be performed on int values and its result is an int 
C)  It can only be performed on float or double values and its result is an int 
D)  It can only be performed on float or double values and its result is a double 
E)  It can be performed on any numeric values, and the result always is numeric

Question 13

Use the following class definition to answer the questions below.
 public class Questions1_4
 {
 public static void main(String[ ] args)
 {
 System.out.print("Here");
 System.out.println("There " + "Everywhere");
 System.out.println("But not" + "in Texas");
 }
 }
-Consider the following statement: System.out.println("1 big bad wolf	8 the 3 little pigs
4 dinner2night");
This statement will output ________ lines of text

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
E)  5 
A)  1 
B)  2 
C)  3 
D)  4 
E)  5

Question 14

Use the following class definition to answer the questions below.
 public class Questions1_4
 {
 public static void main(String[ ] args)
 {
 System.out.print("Here");
 System.out.println("There " + "Everywhere");
 System.out.println("But not" + "in Texas");
 }
 }
-A reasonable documentation comment for this program might be

Accepted Answer

A)  // a program that demonstrates the differences between print, println and how + works 
B)  // a program that outputs a message about Texas 
C)  // a program that demonstrates nothing at all 
D)  // a program that outputs the message "Here There Everywhere But not in Texas" 
E)  // a program that contains three output statements 
A)  // a program that demonstrates the differences between print, println and how + works 
B)  // a program that outputs a message about Texas 
C)  // a program that demonstrates nothing at all 
D)  // a program that outputs the message "Here There Everywhere But not in Texas" 
E)  // a program that contains three output statements

Question 15

What value will z have if we execute the following assignment statement?
Int z = 50 / 10.00;

Accepted Answer

A)  5 
B)  5.0 
C)  50 
D)  10 
E)  none of the above, a run-time error arises because z is an int and 50 / 10.00 is not 
A)  5 
B)  5.0 
C)  50 
D)  10 
E)  none of the above, a run-time error arises because z is an int and 50 / 10.00 is not

Question 16

If you want to draw a red circle inside of a green square in an applet where the paint method is passed a Graphics object called page, which of the following sets of commands might you use?

Accepted Answer

A)  page.setColor(Color.green); page.fillRect(50, 50, 100, 100);
Page.setColor(Color.red);
Page.fillOval(60, 60, 80, 80); 
B)  page.setColor(Color.red); page.fillOval(60, 60, 80, 80);
Page.setColor(Color.green);
Page.fillRect(50, 50, 100, 100); 
C)  page.setColor(Color.green); page.fillRect(60, 60, 80, 80);
Page.setColor(Color.red);
Page.fillOval(50, 50, 100, 100); 
D)  page.setColor(Color.red); page.fillOval(50, 50, 100, 100);
Page.setColor(Color.green);
Page.fillRect(60, 60, 80, 80); 
E)  any of the above would accomplish this 
A)  page.setColor(Color.green); page.fillRect(50, 50, 100, 100);
Page.setColor(Color.red);
Page.fillOval(60, 60, 80, 80); 
B)  page.setColor(Color.red); page.fillOval(60, 60, 80, 80);
Page.setColor(Color.green);
Page.fillRect(50, 50, 100, 100); 
C)  page.setColor(Color.green); page.fillRect(60, 60, 80, 80);
Page.setColor(Color.red);
Page.fillOval(50, 50, 100, 100); 
D)  page.setColor(Color.red); page.fillOval(50, 50, 100, 100);
Page.setColor(Color.green);
Page.fillRect(60, 60, 80, 80); 
E)  any of the above would accomplish this

Question 17

The Random class has a method nextFloat( ) which returns a random float value between

Accepted Answer

A)  -1 and +1 
B)  0 and 1 
C)  0 and 99 
D)  1 and 100 
E)  -2,147,483,648 and +2,147,483,647 
A)  -1 and +1 
B)  0 and 1 
C)  0 and 99 
D)  1 and 100 
E)  -2,147,483,648 and +2,147,483,647

Question 18

If you want to output a double so that at least 1 digit appears to the left side of the decimal point and exactly 1 digit appears to the right side of the decimal point, which pattern would you give a DecimalFormat variable when you instantiate it?

Accepted Answer

A)  "0.0" 
B)  "0.#" 
C)  "0.0#" 
D)  "0.##" 
E)  "#.#" 
A)  "0.0" 
B)  "0.#" 
C)  "0.0#" 
D)  "0.##" 
E)  "#.#"

Question 19

Use the following class definition to answer the questions below.
 public class Questions1_4
 {
 public static void main(String[ ] args)
 {
 System.out.print("Here");
 System.out.println("There " + "Everywhere");
 System.out.println("But not" + "in Texas");
 }
 }
-How many lines of output are provided by this program?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
E)  5 
A)  1 
B)  2 
C)  3 
D)  4 
E)  5

Question 20

If you want to store into the String name the value "George Bush", you would do which statement?

Accepted Answer

A)  String name = "George Bush"; 
B)  String name = new String("George Bush"); 
C)  String name = "George" + " " + "Bush"; 
D)  String name = new String("George" + " " + "Bush"); 
E)  Any of the above would work 
A)  String name = "George Bush"; 
B)  String name = new String("George Bush"); 
C)  String name = "George" + " " + "Bush"; 
D)  String name = new String("George" + " " + "Bush"); 
E)  Any of the above would work

As presented in the Software Failure, the root cause of the Mars Climate Orbiter problem was

A cast is required in which of the following situations?

If String a = "ABCD" and String b = "abcd" then a.equals(b); returns false but a.equalsIgnoreCase(b); returns True.

In order to create a constant, you would use which of the following Java reserved words?

If the String major = "Computer Science", what is returned by major.charAt(1)?

If String name = "George W. Bush"; then the instruction name.length( ); will return 14.

Write an output statement which will output the following characters exactly as shown: / ' \" / ' \

Given two points in an applet represented by the four int variables x1, y1, x2 and y2, write a paint method to draw a line between the two points and write the location of the two points next to the two points.

How do the statements "import java.util.*;" and "import java.util.Random;" differ from each other?

Using getCurrencyInstance( ) formats a variable, automatically inserting

Which of the following is True regarding the mod operator, %?

What value will z have if we execute the following assignment statement? Int z = 50 / 10.00;

If you want to draw a red circle inside of a green square in an applet where the paint method is passed a Graphics object called page, which of the following sets of commands might you use?

The Random class has a method nextFloat( ) which returns a random float value between

If you want to output a double so that at least 1 digit appears to the left side of the decimal point and exactly 1 digit appears to the right side of the decimal point, which pattern would you give a DecimalFormat variable when you instantiate it?

If you want to store into the String name the value "George Bush", you would do which statement?

Introduction

Using Classes and Objects

Writing Classes

Conditionals and Loops

More Conditionals and Loops

Object-Oriented Design

Arrays

Inheritance

Polymorphism

Exceptions

Recursion

Collections

Filters

Exam 2: Data and Expressions

As presented in the Software Failure, the root cause of the Mars Climate Orbiter problem was

A cast is required in which of the following situations?

If String a = "ABCD" and String b = "abcd" then a.equals(b); returns false but a.equalsIgnoreCase(b); returns True.

In order to create a constant, you would use which of the following Java reserved words?

If the String major = "Computer Science", what is returned by major.charAt(1)?

If String name = "George W. Bush"; then the instruction name.length( ); will return 14.

Write an output statement which will output the following characters exactly as shown: / ' \" / ' \

Given two points in an applet represented by the four int variables x1, y1, x2 and y2, write a paint method to draw a line between the two points and write the location of the two points next to the two points.

How do the statements "import java.util.*;" and "import java.util.Random;" differ from each other?

Using getCurrencyInstance( ) formats a variable, automatically inserting

Which of the following is True regarding the mod operator, %?

What value will z have if we execute the following assignment statement? Int z = 50 / 10.00;

If you want to draw a red circle inside of a green square in an applet where the paint method is passed a Graphics object called page, which of the following sets of commands might you use?

The Random class has a method nextFloat( ) which returns a random float value between

If you want to output a double so that at least 1 digit appears to the left side of the decimal point and exactly 1 digit appears to the right side of the decimal point, which pattern would you give a DecimalFormat variable when you instantiate it?

If you want to store into the String name the value "George Bush", you would do which statement?

Introduction

Using Classes and Objects

Writing Classes

Conditionals and Loops

More Conditionals and Loops

Object-Oriented Design

Arrays

Inheritance

Polymorphism

Exceptions

Recursion

Collections

Filters