Question 1

Which of the following statements about an arc is false?

Accepted Answer

A)  An arc is a section of an oval. 
B)  The sweep is the amount of arc to cover. 
C)  Method drawArc draws the edges of an arc. 
D)  The fillArc method draws an oval, with the section that is an arc filled in. 
A)  An arc is a section of an oval. 
B)  The sweep is the amount of arc to cover. 
C)  Method drawArc draws the edges of an arc. 
D)  The fillArc method draws an oval, with the section that is an arc filled in.

Question 2

Which of the following sets of statements creates a multidimensional array with 3 rows, where the first row contains 1 value, the second row contains 4 items and the final row contains 2 items?

Accepted Answer

A)  int[][] items;
Items = new int[3][?];
Items[0] = new int[1];
Items[1] = new int[4];
Items[2] = new int[2]; 
B)  int[][] items;
Items = new int[3][];
Items[0] = new int[1];
Items[1] = new int[4];
Items[2] = new int[2]; 
C)  int[][] items;
Items = new int[?][?];
Items[0] = new int[1];
Items[1] = new int[4];
Items[2] = new int[2]; 
D)  int[][] items;
Items[0] = new int[1];
Items[1] = new int[4];
Items[2] = new int[2]; 
A)  int[][] items;
Items = new int[3][?];
Items[0] = new int[1];
Items[1] = new int[4];
Items[2] = new int[2]; 
B)  int[][] items;
Items = new int[3][];
Items[0] = new int[1];
Items[1] = new int[4];
Items[2] = new int[2]; 
C)  int[][] items;
Items = new int[?][?];
Items[0] = new int[1];
Items[1] = new int[4];
Items[2] = new int[2]; 
D)  int[][] items;
Items[0] = new int[1];
Items[1] = new int[4];
Items[2] = new int[2];

Question 3

Which of the following is false?

Accepted Answer

A)  The size of an ArrayList can be determined via its length instance variable. 
B)  The size of an ArrayList can be determined via its size method. 
C)  You can add a new item to the end of an ArrayList with its add method. 
D)  You can get an item from a specified index in an ArrayList with its get method. 
A)  The size of an ArrayList can be determined via its length instance variable. 
B)  The size of an ArrayList can be determined via its size method. 
C)  You can add a new item to the end of an ArrayList with its add method. 
D)  You can get an item from a specified index in an ArrayList with its get method.

Question 4

Which of the following statements is false?

Accepted Answer

A)  A reference to an object is required to invoke an object's methods. 
B)  A primitive-type variable does not refer to an object. 
C)  Reference-type instance variables are initialized by default to the value void. 
D)  A primitive-type variable cannot be used to invoke a method. 
A)  A reference to an object is required to invoke an object's methods. 
B)  A primitive-type variable does not refer to an object. 
C)  Reference-type instance variables are initialized by default to the value void. 
D)  A primitive-type variable cannot be used to invoke a method.

Question 5

Class Arrays provides method __________ for comparing arrays to determine whether they have the same contents.

Accepted Answer

A)  compare 
B)  compares 
C)  equal 
D)  equals 
A)  compare 
B)  compares 
C)  equal 
D)  equals

Question 6

An array with m rows and n columns is not ________.
A.an m-by-n array.
B. an n-by-m array.
C. a two-dimensional array.
D. a dual-transcripted array.

Accepted Answer

A)  A and C. 
B)  A and D. 
C)  B and D. 
D)  B and C. 
A)  A and C. 
B)  A and D. 
C)  B and D. 
D)  B and C.

Question 7

6.2 Q1 Which of the following statements is false?

Accepted Answer

A)  A catch block declares a type and an exception parameter name. 
B)  Inside the catch block, you can use the parameter's name to interact with a caught exception object. 
C)  When a program is executed, array element indices are checked for validity-all indices must be greater than 0 and less than or equal to the length of the array. 
D)  If an attempt is made to use an invalid index to access an element, an ArrayIndexOutOfBoundsException exception occurs. 
A)  A catch block declares a type and an exception parameter name. 
B)  Inside the catch block, you can use the parameter's name to interact with a caught exception object. 
C)  When a program is executed, array element indices are checked for validity-all indices must be greater than 0 and less than or equal to the length of the array. 
D)  If an attempt is made to use an invalid index to access an element, an ArrayIndexOutOfBoundsException exception occurs.

Question 8

Which of the following tasks cannot be performed using an enhanced for loop?

Accepted Answer

A)  Calculating the product of all the values in an array. 
B)  Displaying all even element values in an array. 
C)  Comparing the elements in an array to a specific value. 
D)  Incrementing the value stored in each element of the array. 
A)  Calculating the product of all the values in an array. 
B)  Displaying all even element values in an array. 
C)  Comparing the elements in an array to a specific value. 
D)  Incrementing the value stored in each element of the array.

Which of the following statements about an arc is false?

Which of the following sets of statements creates a multidimensional array with 3 rows, where the first row contains 1 value, the second row contains 4 items and the final row contains 2 items?

Which of the following is false?

Which of the following statements is false?

Class Arrays provides method __________ for comparing arrays to determine whether they have the same contents.

An array with m rows and n columns is not ________. A.an m-by-n array. B. an n-by-m array. C. a two-dimensional array. D. a dual-transcripted array.

6.2 Q1 Which of the following statements is false?

Which of the following tasks cannot be performed using an enhanced for loop?

Introduction to Computers and Java

Introduction to Java Applications

Control Statements

Control Statements

Methods

Introduction to Classes and Objects

Classes and Objects: a Deeper Look

Object Oriented Programming: Inheritance

Object-Oriented Programming: Polymorphism

Exception Handling

Gui Components

Graphics and Java 2D

Fundamentals of Characters and Strings

Files, Streams and Object Serialization

Generic Collections

Lambdas

Recursion

Searching, Sorting and Big O

Generic Classes and Methods

Custom Generic Data Structures

GUI

Concurrency

Accessing Databases With JDBC

JavaFX

Filters

Exam 6: Arrays and Arraylists

Which of the following statements about an arc is false?

Which of the following sets of statements creates a multidimensional array with 3 rows, where the first row contains 1 value, the second row contains 4 items and the final row contains 2 items?

Which of the following is false?

Which of the following statements is false?

Class Arrays provides method __________ for comparing arrays to determine whether they have the same contents.

An array with m rows and n columns is not ________. A.an m-by-n array. B. an n-by-m array. C. a two-dimensional array. D. a dual-transcripted array.

6.2 Q1 Which of the following statements is false?

Which of the following tasks cannot be performed using an enhanced for loop?

Introduction to Computers and Java

Introduction to Java Applications

Control Statements

Control Statements

Methods

Introduction to Classes and Objects

Classes and Objects: a Deeper Look

Object Oriented Programming: Inheritance

Object-Oriented Programming: Polymorphism

Exception Handling

Gui Components

Graphics and Java 2D

Fundamentals of Characters and Strings

Files, Streams and Object Serialization

Generic Collections

Lambdas

Recursion

Searching, Sorting and Big O

Generic Classes and Methods

Custom Generic Data Structures

GUI

Concurrency

Accessing Databases With JDBC

JavaFX

Filters