Question 1

int[][] myVals = {{2, 4, 6, 8},                   {20, 40, 60, 80} };
Using the above two-dimensional array, what is the value of myVals[1][2] ?

Accepted Answer

A)  4 
B)  60 
C)  6 
D)  40 
A)  4 
B)  60 
C)  6 
D)  40

Question 2

double[][] empSales = new double[5][]; The above statement declares a(n) ____ array.

Accepted Answer

A)  insertion 
B)  sort 
C)  jagged 
D)  boolean 
A)  insertion 
B)  sort 
C)  jagged 
D)  boolean

Question 3

In Java, you create an enumerated data type in a statement that uses the keyword ____.

Accepted Answer

A)  new 
B)  sequence 
C)  collection 
D)  enum 
A)  new 
B)  sequence 
C)  collection 
D)  enum

Question 4

Programmers often refer to a ____ search as a "divide and conquer" procedure.

Accepted Answer

A)  bubble 
B)  binary 
C)  division 
D)  split 
A)  bubble 
B)  binary 
C)  division 
D)  split

Question 5

Which of the following describes a data type for which only appropriate behaviors are allowed?

Accepted Answer

A)  value-neutral 
B)  type-safe 
C)  static 
D)  data-cast 
A)  value-neutral 
B)  type-safe 
C)  static 
D)  data-cast

Question 6

The ArrayList class ____ method returns the current ArrayList size.

Accepted Answer

A)  size 
B)  capacity 
C)  length 
D)  rows 
A)  size 
B)  capacity 
C)  length 
D)  rows

Question 7

How would you create an array named someNumbers that holds three rows and four columns?

Accepted Answer

A)  int[][] someNumbers = new int[4][3]; 
B)  int[][] someNumbers = new int[3][4]; 
C)  int[] someNumbers = new int[3][4]; 
D)  double[][] someNumbers = new int[3][4]; 
A)  int[][] someNumbers = new int[4][3]; 
B)  int[][] someNumbers = new int[3][4]; 
C)  int[] someNumbers = new int[3][4]; 
D)  double[][] someNumbers = new int[3][4];

Question 8

Write the statement to declare a three-by-four array of integers with the elements initialized to zero. Name the array myArray .

Accepted Answer

int[][] my

Question 9

Match between columns
                        Premises: Two-dimensional array

Accepted Answer

The Answer of two-dimensional array and Enumerated data type and is...

Question 10

The  Arrays  class ____ method assigns the specified value to each element of the specified array.

Accepted Answer

A)  assign() 
B)  init() 
C)  sort() 
D)  fill() 
A)  assign() 
B)  init() 
C)  sort() 
D)  fill()

Question 11

import java.util.*; 
public class myArray 
{ 
    public static void main(String[] args) 
    { 
      int myVals = new int[4]; 
      -----Code here----- 
      display("My values are: ", myVals); 
    } 
    public static void display(String message, int array[]) 
    { 
       int arraySize = array.length; 
       System.out.print(message); 
       for(int x = 0; x < arraySize; ++x) 
          System.out.print(array[x] + " "); 
    } 
} 
Using the above code, complete the indicated section with a fill method() to fill each array element with a value of 2. What will be displayed after the display() method is executed?

Accepted Answer

Arrays.fill(myVals, 2); 
When

Question 12

enum Color {RED, GREEN, BLUE} 
public class EnumOrdinal 
{ 
    public static void main(String[] args) 
   { 
     ---Code here--- 
     ---Code here--- 
     ---Code here--- 
    } 
} 
The above code demonstrates the use of the enum ordinal() method to get the ordinal value of an enum constant. Fill in the indicated lines with println() statements that will get the ordinal of the enumeration constant. Describe the output that will display when the code is executed.

Accepted Answer

System.out.println("Color.RED  : " + Col

Question 13

When you pass a two-dimensional array to a method, you pass the array name just as you do with a one-dimensional array.

Accepted Answer

A) True 
 B)False

Question 14

Match between columns
                        Premises: Two or more columns of values

Accepted Answer

The Answer of set() method and bubble sort and dynamically is...

Question 15

When working with two-dimensional arrays, the length field holds the number of rows in an array and each row has a length field that holds the number of columns in the row.

Accepted Answer

A) True 
 B)False

Question 16

Match between columns
                        Premises: Alters an item at a specified ArrayList location

Accepted Answer

The Answer of java.util and fill() method and Enumerated data is...

Question 17

int[][] studentScores = {{70, 82, 90, 68}, 
{95, 75, 67, 89}, 
{98, 79, 57, 81}}; 
Using the above two-dimensional array, what is the value of studentScores[0][0] ? What is the value of studentScores[2][3] ? What is the value of studentScores[1][2] ? Describe how arrays reference values with subscripts.

Accepted Answer

studentScores[0][0] = 70 
studentScores[

Question 18

A method that receives a two-dimensional array uses two ____ pairs following the data type in the parameter list of the method header.

Accepted Answer

A)  curly brace 
B)  parenthesis 
C)  bracket 
D)  dot 
A)  curly brace 
B)  parenthesis 
C)  bracket 
D)  dot

Question 19

An ArrayList 's ____ is the number of items it can hold without having to increase its size.

Accepted Answer

A)  length 
B)  buffer 
C)  capacity 
D)  size 
A)  length 
B)  buffer 
C)  capacity 
D)  size

Question 20

Since the ArrayList class is part of the java.util package, you can use the java.util.*; import statement to access it.

Accepted Answer

A) True 
 B)False

int[][] myVals = {{2, 4, 6, 8}, {20, 40, 60, 80} }; Using the above two-dimensional array, what is the value of myVals[1][2] ?

double[][] empSales = new double[5][]; The above statement declares a(n) ____ array.

In Java, you create an enumerated data type in a statement that uses the keyword ____.

Programmers often refer to a ____ search as a "divide and conquer" procedure.

Which of the following describes a data type for which only appropriate behaviors are allowed?

The ArrayList class ____ method returns the current ArrayList size.

How would you create an array named someNumbers that holds three rows and four columns?

Write the statement to declare a three-by-four array of integers with the elements initialized to zero. Name the array myArray .

The Arrays class ____ method assigns the specified value to each element of the specified array.

When you pass a two-dimensional array to a method, you pass the array name just as you do with a one-dimensional array.

When working with two-dimensional arrays, the length field holds the number of rows in an array and each row has a length field that holds the number of columns in the row.

A method that receives a two-dimensional array uses two ____ pairs following the data type in the parameter list of the method header.

An ArrayList 's ____ is the number of items it can hold without having to increase its size.

Since the ArrayList class is part of the java.util package, you can use the java.util.*; import statement to access it.

Creating Your First Java Classes

Using Data

Using Methods, Classes and Objects

More Object Concepts

Making Decisions

Looping

Characters, Strings and the Stringbuilder

Arrays

Introduction to Inheritance

Advanced Inheritance Concepts

Exception Handling

File Input and Output

Introduction to Swing Components

Using Javafx and Scene Builder

Filters

Exam 9: Advanced Array Concepts

int[][] myVals = {{2, 4, 6, 8}, {20, 40, 60, 80} }; Using the above two-dimensional array, what is the value of myVals[1][2] ?

double[][] empSales = new double[5][]; The above statement declares a(n) ____ array.

In Java, you create an enumerated data type in a statement that uses the keyword ____.

Programmers often refer to a ____ search as a "divide and conquer" procedure.

Which of the following describes a data type for which only appropriate behaviors are allowed?

The ArrayList class ____ method returns the current ArrayList size.

How would you create an array named someNumbers that holds three rows and four columns?

Write the statement to declare a three-by-four array of integers with the elements initialized to zero. Name the array myArray .

The Arrays class ____ method assigns the specified value to each element of the specified array.

When you pass a two-dimensional array to a method, you pass the array name just as you do with a one-dimensional array.

When working with two-dimensional arrays, the length field holds the number of rows in an array and each row has a length field that holds the number of columns in the row.

A method that receives a two-dimensional array uses two ____ pairs following the data type in the parameter list of the method header.

An ArrayList 's ____ is the number of items it can hold without having to increase its size.

Since the ArrayList class is part of the java.util package, you can use the java.util.*; import statement to access it.

Creating Your First Java Classes

Using Data

Using Methods, Classes and Objects

More Object Concepts

Making Decisions

Looping

Characters, Strings and the Stringbuilder

Arrays

Introduction to Inheritance

Advanced Inheritance Concepts

Exception Handling

File Input and Output

Introduction to Swing Components

Using Javafx and Scene Builder

Filters