Explain different data types in Java with example?

Answer 1

1) List the eight basic data types used in Java. Give examples. The basic types are also known as primitive types and when a variable is declared as any of them, the computer creates what you can call a 'box' in its memory that is big enough to hold a value of that type. Eg int x; // at runtime, computer creates a box called 'x' big enough to hold an integer an integer can be anything between -2147483638 to 2147483647 the other seven primitive (or basic) data types are byte - anything between -128 to 127 short - anything between -32768 to 32767 long - anything between -9223372036854775808 to 9223372036854775807 float - anything between -1.4 * 10^-45 to 3.4 * 10^38 double - anything between -4.9 * 10^-324 to 1.8 * 10^308 char - any single digit on your keyboard (unicode) boolean - true or false source: charatan and kans Java in two semesters pg 19

Answer 2

Data types in Java represents the type of data a java object holds. There are different data types in Java. They are:

1. int, float, double, long, short etc - used to hold numbers

2. boolean - used to hold true or false values

3. Strings - used to hold a series of characters like names, address etc

4. char - used to hold single characters

Each primitive data type has a corresponding Wrapper class that can be used if we require the value in a primitive data type as an object.

for example Integer is the wrapper class for int

Example declarations:

int x = 10;

String name = "Tommy";

char sex = 'M';

Answer 3

basic data types:

Byte, short, int, long, float,

Double, char, boolean

advanced data types

array type

// Points to an array instance

class type

// Points to an object or a class instance

interface type

// Points to an object and a method, which is implemented to the corresponding interface

Answer 4

Assuming by "fundamental" you mean the primitive data types: boolean, byte, char, short, int, long, float, and double