Chapter 3-3

Question 1

Two types of data types in Java

Answer 1

1. Primitive data types
2. Non-primitive data types

Question 2

include boolean, char,
byte, short, int, long, float and double.

Answer 2

Primitive data types

Question 3

include
Classes, Interfaces, and Arrays.

Answer 3

Non-primitive data types

Question 4

Primitive data types:

Answer 4

a) Boolean data type
b) Byte Data Type
c) Short Data Type
d) Int Data Type
e) Long Data Type
f) Float Data Type
g) Double Data Type
h) Char Data Type

Question 5

This data type is used for simple flags that track true/false conditions

Answer 5

Boolean data type

Question 6

is used to save memory in large arrays where the memory
savings is most required.
It is an 8-bit signed two’s complement integer. Its value-range lies between -128 to
127 (inclusive).

Answer 6

Byte Data Type

Question 7

is a 16-bit signed two’s complement integer. Its value-range lies
between -32,768 to 32,767 (inclusive).

Answer 7

Short Data Type

Question 8

is generally used as a default data type for integral values unless if
there is no problem about memory.
is a 32-bit signed two’s complement integer

Answer 8

Int Data Type

Question 9

is a 64-bit two’s complement integer.
is used when you need a range of values
more than those provided by int.

Answer 9

Long Data Type

Question 10

is a single-precision 32-bit IEEE 754 floating point.
It is recommended to use a float (instead of double) if you need to save memory in
large arrays of floating point numbers.

Answer 10

Float Data Type

Question 11

is a double-precision 64-bit IEEE 754 floating point.
is generally used for decimal values just like float

Answer 11

Double Data Type

Question 12

is a single 16-bit Unicode character.
is used to store characters.

Answer 12

Char Data Type