Types of Datatypes in Java

Different types of datatypes in Java are

• byte
• short
• int
• long
• float
• double
• boolean
• char

byte

• byte is a datatype which can be used to store numbers between -128 and 128.
• It makes compiler allocate memory of 1 byte(8 bits).

short

• short is a datatype which can be used to store numbers between -32,768 and 32,768.
• It makes compiler allocate memory of 2 byte(16 bits).

int

• int is a datatype which can be used to store numbers between -2³¹ and 2³¹.
• It makes compiler allocate memory of 4 byte(32 bits).

long

• long is a datatype which can be used to store numbers between -2⁶³ and 2⁶³.
• It makes compiler allocate memory of 8 byte(64 bits).

float

• float is a datatype which can be used to store small decimal numbers.
• It makes compiler allocate memory of 4 byte(32 bits).

double

• double is a datatype which can be used to store large decimal numbers.
• It makes compiler allocate memory of 8 byte(64 bits).

boolean

• double is a datatype which can be used to store only true and false logics.
• It makes compiler allocate memory of 1 bit(smallest).

char

• char is a datatype which can be used to store single character or alphabet which are in UNICODE characters list between 0 to 65535.
• It makes compiler allocate memory of 2 byte(64 bits).
• If you need list of unicode characters, learn from here.

What is a variable or datatype and why they are used detailly ?