Question 1

You can add an item at any point in a(n) ____ container and the array size expands automatically to accommodate the new item.

Accepted Answer

A)  ArrayList 
B)  Array 
C)  ResizableArray 
D)  array 
A)  ArrayList 
B)  Array 
C)  ResizableArray 
D)  array A

Question 2

int[][] myVals = new int[3][] 
myVals[0] = new int[3]; 
myVals[1] = new int[10]; 
myVals[2] = new int[5]; 
The above code depicts a jagged array. What does this mean? Describe the rows and columns that make up this array.

Accepted Answer

In a two-dimensional array, each row also is an array. In Java, you can declare each row to have a different length. When a two-dimensional array has rows of different lengths, it is a jagged array because you can picture the ends of each row as uneven. You create a jagged array by defining the number of rows for a two-dimensional array, but not defining the number of columns in the rows. 
The array is defined as follows: 
int[][] myVals = new int[3][] 
This statement declares an array with three rows, but the rows are not yet created. Then, the individual rows are declared using the following statements: 
myVals[0] = new int[3]; 
myVals[1] = new int[10]; 
myVals[2] = new int[5]; 
myVals[0] has 3 elements/columns. 
myVals[1] has 10 elements/columns. 
myVals[2] has 5 elements/columns.

Question 3

An array that you can picture as a column of values, and whose elements you can access using one subscript, is a ____ array.

Accepted Answer

A)  single-dimensional 
B)  two-dimensional 
C)  parallel 
D)  column 
A)  single-dimensional 
B)  two-dimensional 
C)  parallel 
D)  column A

Question 4

What are some of the advantages of the ArrayList class over the Arrays class?

Accepted Answer

In addition to the Arrays class, Java pr

Question 5

Match between columns
                        Premises: Assigns the specified value to each element of the specified array

Accepted Answer

The Answer of jagged array and matrix and set() method is...

Question 6

The  Arrays  class ____ method sorts the specified array into ascending order.

Accepted Answer

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

Question 7

​import javax.swing.*; 
class FindPoints 
{ 
   public static void main(String[] args) 
   { 
      int[][] points = 
     {{10, 20, 30}, 
      {20, 40, 60}, 
      {40, 60, 80}}; 
      String prompt; 
      int class; 
      int level; 
      prompt = JOptionPane.showInputDialog(null, "Class: "); 
      class = Integer.parseInt(prompt); 
      prompt = JOptionPane.showInputDialog(null, "Level: "); 
      level = Integer.parseInt(prompt); 
​ 
      JOption.showMessageDialog(null, "Your points: " + points[class][level]); 
   } 
} 
The above code depicts a two-dimensional array named points that refers to a Class and Level to determine a point value. If a user inputs a Class of 1 and a Level of 2, what point value will be displayed when the program executes? Explain how you arrived at your answer.

Accepted Answer

The point value will be 60. When working

Question 8

When you place objects in order beginning with the object that has the lowest value, you are sorting in ____ order.

Accepted Answer

A)  ascending 
B)  reverse 
C)  descending 
D)  lowest 
A)  ascending 
B)  reverse 
C)  descending 
D)  lowest

Question 9

With a two-dimensional array, the ____ field holds the number of rows in the array.

Accepted Answer

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

Question 10

How can you use the length field with a two-dimensional array? Show an example two-dimensional array declaration and provide the length values for the example array.

Accepted Answer

A one dimensional array has a length fie

Question 11

How can you pass a two-dimensional array to a method? Provide some examples.

Accepted Answer

When you pass a two-dimensional array to

Question 12

Match between columns
                        Premises: Adds an item to the end of an ArrayList

Accepted Answer

The Answer of Enumerated data type and ascending order and is...

Question 13

When using an insertion sort, each list element is examined one at a time and moved down if the tested element should be inserted before them.

Accepted Answer

A) True 
 B)False

Question 14

To declare a two-dimensional array in Java, you type two sets of ____ after the array type.

Accepted Answer

A)  { } 
B)  [ ] 
C)  ( ) 
D)   
A)  { } 
B)  [ ] 
C)  ( ) 
D)

Question 15

Write the statement that assigns the integer value 20 to the first column of the first row of an array named myVals .

Accepted Answer

The answer of Write the statement that assigns the integer...

Question 16

What import statements must be used before you can use an ArrayList class?

Accepted Answer

To use the ArrayList class, yo

Question 17

If you do not provide values for the elements in a two-dimensional numeric array, the values default to null .

Accepted Answer

A) True 
 B)False

Question 18

Match between columns
                        Premises: A programmer-created data type with a fixed set of values

Accepted Answer

The Answer of type-safe and Enumerated data type and set() is...

Question 19

The Arrays class ____ method puts a particular value in each element of the array.

Accepted Answer

A)  binarySearch 
B)  fill 
C)  equals 
D)  search 
A)  binarySearch 
B)  fill 
C)  equals 
D)  search

Question 20

int[][] myVals = {{2, 4, 6},                   {1, 8, 9},
                  {1, 3, 5, 7}};
Using the above array, what is the value of myVals[1].length ?

Accepted Answer

A)  1 
B)  7 
C)  3 
D)  6 
A)  1 
B)  7 
C)  3 
D)  6

You can add an item at any point in a(n) ____ container and the array size expands automatically to accommodate the new item.

int[][] myVals = new int[3][] myVals[0] = new int[3]; myVals[1] = new int[10]; myVals[2] = new int[5]; The above code depicts a jagged array. What does this mean? Describe the rows and columns that make up this array.

An array that you can picture as a column of values, and whose elements you can access using one subscript, is a ____ array.

What are some of the advantages of the ArrayList class over the Arrays class?

The Arrays class ____ method sorts the specified array into ascending order.

When you place objects in order beginning with the object that has the lowest value, you are sorting in ____ order.

With a two-dimensional array, the ____ field holds the number of rows in the array.

How can you use the length field with a two-dimensional array? Show an example two-dimensional array declaration and provide the length values for the example array.

How can you pass a two-dimensional array to a method? Provide some examples.

When using an insertion sort, each list element is examined one at a time and moved down if the tested element should be inserted before them.

To declare a two-dimensional array in Java, you type two sets of ____ after the array type.

Write the statement that assigns the integer value 20 to the first column of the first row of an array named myVals .

What import statements must be used before you can use an ArrayList class?

If you do not provide values for the elements in a two-dimensional numeric array, the values default to null .

The Arrays class ____ method puts a particular value in each element of the array.

int[][] myVals = {{2, 4, 6}, {1, 8, 9}, {1, 3, 5, 7}}; Using the above array, what is the value of myVals[1].length ?

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

You can add an item at any point in a(n) ____ container and the array size expands automatically to accommodate the new item.

int[][] myVals = new int[3][] myVals[0] = new int[3]; myVals[1] = new int[10]; myVals[2] = new int[5]; The above code depicts a jagged array. What does this mean? Describe the rows and columns that make up this array.

An array that you can picture as a column of values, and whose elements you can access using one subscript, is a ____ array.

What are some of the advantages of the ArrayList class over the Arrays class?

The Arrays class ____ method sorts the specified array into ascending order.

When you place objects in order beginning with the object that has the lowest value, you are sorting in ____ order.

With a two-dimensional array, the ____ field holds the number of rows in the array.

How can you use the length field with a two-dimensional array? Show an example two-dimensional array declaration and provide the length values for the example array.

How can you pass a two-dimensional array to a method? Provide some examples.

When using an insertion sort, each list element is examined one at a time and moved down if the tested element should be inserted before them.

To declare a two-dimensional array in Java, you type two sets of ____ after the array type.

Write the statement that assigns the integer value 20 to the first column of the first row of an array named myVals .

What import statements must be used before you can use an ArrayList class?

If you do not provide values for the elements in a two-dimensional numeric array, the values default to null .

The Arrays class ____ method puts a particular value in each element of the array.

int[][] myVals = {{2, 4, 6}, {1, 8, 9}, {1, 3, 5, 7}}; Using the above array, what is the value of myVals[1].length ?

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