Primitives

Question 1

primitive type: byte

bits?
range?
default value?
representations?

Answer 1

8 bits

-128 to 127

0

Representation: Binary (0b1001), Octal (072), Decimal (1234), Hex (0x4F)

Question 2

primitive type: short

bits?
range?
default value?
representations?

Answer 2

16 bits

-32768 to 32768

0

Representation: Binary (0b1001), Octal (072), Decimal (1234), Hex (0x4F)

Question 3

primitive type: int

bits?
range?
default value?
representations?

Answer 3

32 bits

-2147483648 to 2147483648

0

Representation: Binary (0b1001), Octal (072), Decimal (1234), Hex (0x4F)

Question 4

primitive type: long

bits?
range?
default value?
representations?

Answer 4

64 bits

-92233720368547000 to 92233720368547000

0 or 0L

Representation: Binary (0b1001), Octal (072), Decimal (1234), Hex (0x4F)

Question 5

primitive type: float

bits?
range?
default value?
representations?

Answer 5

32 bits

1. 4E-45 to 3.4028235E+38
2. 0F

Representation: Normal (123.4), Exponential (1.234E2)

Question 6

primitive type: double

bits?
range?
default value?
representations?

Answer 6

64 bits

4. 9E-324 to 1.7976931348623157E+308
5. 0

Representation: Normal (123.4), Exponential (1.234E2)

Question 7

primitive type: char

bits?
range?
default value?
representations?

Answer 7

16 bits

0 to 65535 (unicode set)

\u0000

Character (‘A’), ASCII (‘\101’), Unicode (‘\u0041’), Escape (\t, \b, \n, \r, \f, ', ", \)

Question 8

What primitive type is expected when performing arithmetic on bytes, shorts, or chars?

Answer 8

int

Question 9

When performing arithmetic on primitives and all participants are bigger than an int, what primitive data type will the result be?

Answer 9

The largest participant in the arithmetic expression.

Question 10

What types can work with a switch statement?

Answer 10

byte, short, int, char, String, enum