Module 2

Question 1

Cannot be changed while the program is running

For example, System.out.println(459);

Answer 1

CONSTANT

Question 2

The value that is taken literally at each use.

Answer 2

LITERAL CONSTANT

Question 3

As opposed to a literal constant.

Answer 3

NUMERIC CONSTANT

Question 4

No identifier is associated with it.

Answer 4

UNNAMED CONSTANT

Question 5

Instead of using constant data, you can set up a data item to be _________.

Answer 5

VARIABLE

Question 6

A named memory location.

Answer 6

VARIABLE

Question 7

Used to store a value.

Answer 7

VARIABLE

Question 8

Can hold only one value at a time.

Answer 8

VARIABLE

Question 9

Its value can change.

Answer 9

VARIABLE

Question 10

A type of data that can be stored.

Answer 10

DATA TYPE

Question 11

It refers to how much memory an item occupies.

Answer 11

DATA TYPE

Question 12

A Data item’s _________ defines the type of data that can be stored there, how much memory the item occupies, and what types of operations can be performed on the data.

Answer 12

DATA TYPE

Question 13

2 Main Data Types in Java

Answer 13

1. PRIMITIVE TYPES

2. REFERENCE OR CLASSES TYPES

Question 14

8 Primitive Data Types in Java

Answer 14

1. BYTE
2. SHORT
3. INT
4. LONG
5. FLOAT
6. DOUBLE
7. CHAR
8. BOOLEAN

Question 15

Are data types considered basic to Java.

Answer 15

PRIMITIVE TYPES

Question 16

Are more complex data types which hold memory addresses.

Answer 16

REFERENCE OR CLASSES TYPE

Question 17

The keyword for a byte-length integer.

Answer 17

BYTE

Question 18

The keyword for a short integer.

Answer 18

SHORT

Question 19

The keyword for integer.

Answer 19

INT

Question 20

The keyword for long integer.

Answer 20

LONG

Question 21

Single-precision floating point.

Answer 21

FLOAT

Question 22

Double-precision floating point.

Answer 22

DOUBLE

Question 23

A single character.

Answer 23

CHAR

Question 24

Can be true or false.

Answer 24

BOOLEAN

Question 25

Uses naming rules for legal class identifiers; names must be legal Java identifiers; must start with a letter and cannot be a reserved keyword.

Answer 25

NAME VARIABLES

Question 26

Begins with lowercase letters and capitalizing subsequent words.

Answer 26

CAMEL CASING

Question 27

To use a variable, you must first D______ it

Answer 27

DECLARE

Question 28

A statement that reserves a named memory location.

Answer 28

VARIABLE DECLARATION

Question 29

It Includes data type, identifier, optional assignment operator, and assigned value, and ending semicolon For example, int age;

Answer 29

VARIABLE DECLARATION

Question 30

The equal sign (=) The value to the right is assigned to the variable on the left For example, int age = 30;

Answer 30

ASSIGNMENT OPERATOR

Question 31

int age = 30; is called?

Answer 31

DECLARATION AND INITIALIZATION

Question 32

An assignment made when declaring a variable.

Answer 32

INITIALIZATION

Question 33

A declared variable but do not assign a value to it. | For example, age = 30;

Answer 33

UNINITIALIZED VARIABLE

Question 34

Should not change during program execution.

Answer 34

NAMED CONSTANT

Question 35

Has a data type, name, and value Has a data type preceded by the keyword final Can be assigned a value only once Conventionally is given identifiers using all uppercase letters

Answer 35

NAMED CONSTANT

Question 36

The area in which a data item is visible to a program, and in which you can refer to it using its simple identifier.

Answer 36

SCOPE

Question 37

A ___________ is in scope from the point it is declared Until the end of the block of code where the declaration lies

Answer 37

VARIABLE OR CONSTANT

Question 38

Use alone or in combination with a String.

Answer 38

print() or println() statement

Question 39

A numeric variable is concatenated to a String using the plus sign.

Answer 39

CONCATENATED

Question 40

``` The entire expression becomes a String The println() method can accept a number or String ```

Answer 40

CONCATENATED

Question 41

Is a whole number without decimal places.

Answer 41

INTEGER / INT

Question 42

This data type is based on true or false comparisons.

Answer 42

BOOLEAN

Question 43

Compares two items; it is sometimes called a comparison operator.

Answer 43

RELATIONAL OPERATOR

Question 44

A ___________ number contains decimal positions.

Answer 44

FLOATING POINT

Question 45

Holds any single character. Place a constant character value within single quotation marks.

Answer 45

CHAR / CHAR DATA TYPE

Question 46

``` A built-in class Stores and manipulates character strings. ```

Answer 46

STRING

Question 47

Are written between double quotation marks.

Answer 47

STRING CONSTANTS

Question 48

Begins with a backslash followed by a character.

Answer 48

ESCAPE SEQUENCE

Question 49

Represents a single non-printing character

Answer 49

ESCAPE SEQUENCE