Data Types - JAVA & C#

Question 1

Blocks

Answer 1

Also known as compound statement, are marked by delimiting with braces { }.

Question 2

Boolean

Answer 2

Variable type used to represent a single true or false value. Size of 1 bit.

Question 3

Byte

Answer 3

A variable type that is a sequence of 8 bits (enough to represent one character of alphanumeric data) processed as a single unit of information, Range [-127,128]

Question 4

Char

Answer 4

Variable type with a size of 16 bytes whose range is all Unicode characters. It has a minimum value of ‘\u0000’ (or 0) and a maxiumum value of ‘\uffff’ (or 65,534 inclusive)

Question 5

Double

Answer 5

Variable type of 64 bits and a range of [-1.7E308, 1.7E308]

Question 6

Float

Answer 6

Variable type of 32 bits and a range of [-3.4E38,3.4E38]

Question 7

Hexadecimal

Answer 7

These digits operate on a base-16 number These numbers use the letters A, B, C, D, E, and F along with the numbers 0 to 9 to create their 16 different digits, where A represents 10 and F represents 15. In programs written in the Java programming language must be preceded with 0x.

Question 8

int

Answer 8

Variable type with 32 bits and a range of [-2147483648 to 2147483647] = 4 bytes of storage

Question 9

Long

Answer 9

Variable type of 64 bits and with a range of [-9223372036854775808, 9223372036854775807]

Question 10

Short

Answer 10

Variable type with a size of 16 bits and a range [-32768,32767 ]

Question 11

Statements

Answer 11

smallest executable unit or instruction, each one ends in a semicolon.

Question 12

Unicode

Answer 12

A standardized 16-bit character set that represents the character sets of most major languages in the world. The letters entered have to be above 192.

Question 13

Variable Declarations

Answer 13

A statement that typically specifies two things about a variable: The variable’s name and the variable’s data type. Must be done before it can be used in a program.

Question 14

Variable names

Answer 14

Strings of any length of letters, digits, underscores, and dollar signs that begin with a a letter, underscore, or dollar sign.