Question 1

Describe how to use the boolean data type. Show two examples of a boolean variable assignment; one that uses true or false and one that uses a relational operator.

Accepted Answer

Boolean logic is based on true or false comparisons. Whereas an int variable can hold millions  of different values (at different times), a boolean variable can hold only one of two values-true  or false. Besides assigning true and false, you also can assign a value to a Boolean variable based on the result of a comparison. 
boolean isItPayday = false; boolean isItPayday = (today="Friday");

Question 2

Match between columns
                        Premises: Rules for the order in which parts of a mathematical expression are evaluated

Accepted Answer

The Answer of operand. and operator precedence. and primitive type. is...

Question 3

Describe how the Scanner class works with the System.in object in order to provide flexibility. Provide an example of using the Scanner class with System.in.

Accepted Answer

The System.in object is designed to read bytes only. Since it is common to accept data of other types, the Scanner object can connect to the System.in property. This creates a Scanner object that will be connected to the default input device. 
Scanner inputDevice = new Scanner(System.in);

Question 4

A variable declaration is a statement that reserves a named memory location. It includes what four elements?

Accepted Answer

A data type that identifies the type of

Question 5

Match between columns
                        Premises: A floating-point data type

Accepted Answer

The Answer of blank final and float. and lvalue and is...

Question 6

Which escape sequence will move the cursor to the beginning of the current line?

Accepted Answer

A)  \b 
B)   
C)  \ 
D)  
 
A)  \b 
B)   
C)  \ 
D)

Question 7

You may declare an unlimited number of variables in a statement as long as the variables are ____.

Accepted Answer

A)  the same data type 
B)  initialized to the same value 
C)  properly commented 
D)  floating point numbers 
A)  the same data type 
B)  initialized to the same value 
C)  properly commented 
D)  floating point numbers

Question 8

What is the difference between the float data type and the double data type?

Accepted Answer

Java supports two floating-point data ty

Question 9

Match between columns
                        Premises: true or false

Accepted Answer

The Answer of float. and boolean and operator precedence. and is...

Question 10

Describe three ways in which a named constant differs from a variable.

Accepted Answer

In its declaration statement, the data t

Question 11

Which line of code correctly creates a Scanner object?

Accepted Answer

A)  Scanner inputDevice = new Scanner(System); 
B)  Scanner inputDevice = new Scanner(System.in) 
C)  Scanner inputDevice = new Scanner(in); 
D)  Scanner inputDevice = new Scanner(System.in); 
A)  Scanner inputDevice = new Scanner(System); 
B)  Scanner inputDevice = new Scanner(System.in) 
C)  Scanner inputDevice = new Scanner(in); 
D)  Scanner inputDevice = new Scanner(System.in);

Question 12

Match between columns
                        Premises: Break into component parts

Accepted Answer

The Answer of lvalue and parse and assignment. and cast is...

Question 13

The expression   boolean isTenLarger = (10 < 5) will produce a value of true .

Accepted Answer

A) True 
 B)False

Question 14

Match between columns
                        Premises: Also called the type-ahead buffer

Accepted Answer

The Answer of cast operator. and promotion and boolean and is...

Question 15

The ____ is the type to which all operands in an expression are converted so that they are compatible with each other.

Accepted Answer

A)  unifying type 
B)  data type 
C)  numbered 
D)  primitive 
A)  unifying type 
B)  data type 
C)  numbered 
D)  primitive

Question 16

import javax.swing.JOptionPane; 
public class salesJune 
{ 
    public static void main(String[] args) 
    { 
       int storeSales = 250; 
    } 
}
In the above code, complete the statement that will display a message dialog box that will appear centered on the screen and will display the following text: 
Congratulations! June sales were $250!

Accepted Answer

JOptionPane.showMess

Question 17

Match between columns
                        Premises: Can appear on the left side of an assignment operator

Accepted Answer

The Answer of garbage value. and assignment. and boolean and is...

Question 18

In Java, when a numeric variable is concatenated to a String using the ____, the entire expression becomes a String .

Accepted Answer

A)  plus sign 
B)  equal sign 
C)  concatenate statement 
D)  string statement 
A)  plus sign 
B)  equal sign 
C)  concatenate statement 
D)  string statement

Question 19

A variable can hold more than one value at a time.

Accepted Answer

A) True 
 B)False

Question 20

A(n) ____ number contains decimal positions.

Accepted Answer

A)  char 
B)  int 
C)  float 
D)  boolean 
A)  char 
B)  int 
C)  float 
D)  boolean

Describe how to use the boolean data type. Show two examples of a boolean variable assignment; one that uses true or false and one that uses a relational operator.

Describe how the Scanner class works with the System.in object in order to provide flexibility. Provide an example of using the Scanner class with System.in.

A variable declaration is a statement that reserves a named memory location. It includes what four elements?

Which escape sequence will move the cursor to the beginning of the current line?

You may declare an unlimited number of variables in a statement as long as the variables are ____.

What is the difference between the float data type and the double data type?

Describe three ways in which a named constant differs from a variable.

Which line of code correctly creates a Scanner object?

The expression boolean isTenLarger = (10 < 5) will produce a value of true .

The ____ is the type to which all operands in an expression are converted so that they are compatible with each other.

In Java, when a numeric variable is concatenated to a String using the ____, the entire expression becomes a String .

A variable can hold more than one value at a time.

A(n) ____ number contains decimal positions.

Creating Your First Java Classes

Using Methods, Classes and Objects

More Object Concepts

Making Decisions

Looping

Characters, Strings and the Stringbuilder

Arrays

Advanced Array Concepts

Introduction to Inheritance

Advanced Inheritance Concepts

Exception Handling

File Input and Output

Introduction to Swing Components

Using Javafx and Scene Builder

Filters

Exam 2: Using Data

Describe how to use the boolean data type. Show two examples of a boolean variable assignment; one that uses true or false and one that uses a relational operator.

Describe how the Scanner class works with the System.in object in order to provide flexibility. Provide an example of using the Scanner class with System.in.

A variable declaration is a statement that reserves a named memory location. It includes what four elements?

Which escape sequence will move the cursor to the beginning of the current line?

You may declare an unlimited number of variables in a statement as long as the variables are ____.

What is the difference between the float data type and the double data type?

Describe three ways in which a named constant differs from a variable.

Which line of code correctly creates a Scanner object?

The expression boolean isTenLarger = (10 < 5) will produce a value of true .

The ____ is the type to which all operands in an expression are converted so that they are compatible with each other.

In Java, when a numeric variable is concatenated to a String using the ____, the entire expression becomes a String .

A variable can hold more than one value at a time.

A(n) ____ number contains decimal positions.

Creating Your First Java Classes

Using Methods, Classes and Objects

More Object Concepts

Making Decisions

Looping

Characters, Strings and the Stringbuilder

Arrays

Advanced Array Concepts

Introduction to Inheritance

Advanced Inheritance Concepts

Exception Handling

File Input and Output

Introduction to Swing Components

Using Javafx and Scene Builder

Filters