Java ( Code Academy): Java variable

Question 1

We store information

Answer 1

in variables

Question 2

Naming a piece of information allows us

Answer 2

to use that name later, accessing the information we stored.

Question 3

Primitive data types

Answer 3

are types of data built-in to the Java system.

Question 4

The three main primitive types

Answer 4

int, double, and boolean

Question 5

The " escape sequence allows us to add

Answer 5

quotation marks “ to a String value. :

input: System.out.println(“"Hello World"”);

output: // Prints: “Hello World”

Question 6

Using the \ escape sequence allows us

Answer 6

to place backslashes in our String text:

input: System.out.println(“This is the backslash symbol: \”);
output: // Prints: This is the backslash symbol: \

Question 7

\n escape sequence in a String, the compiler will

Answer 7

output a new line of text:

System.out.println(“Hello\nGoodbye”);
/*
Prints:
Hello
Goodbye
*/

Question 8

Creating and filling variables is a

Answer 8

powerful concept that allows us to keep track of all kinds of data in our program.