Java Variables and Data Types

Question 1

Used to store up temporary data to be used in our programs run time

Answer 1

Variables

Question 2

Stores text such as “hello”. It is surrounded by double-quotes.

Answer 2

String

Question 3

Stores integers (whole numbers), Without decimal such as 123 or - 123

Answer 3

int

Question 4

Stores floating-point numbers, with decimal such as 19.99 or -19.99

Answer 4

float

Question 5

Store single characters such as ‘a’ or ‘B’. Char values are surrounded by single quotes

Answer 5

char

Question 6

Stores value with two states: true or false

Answer 6

boolean

Question 7

The type of data inside our variable.

Answer 7

Data Types

Question 8

Name of the variable that the programmer indicated. It is used to read and write the variable.

Answer 8

Identifiers

Question 9

The process of joining strings together with the + operator

Answer 9

Concatenation

Question 10

Classes are treated as data types however, there are data types that are not classes. What are they called?

Answer 10

Base Types