Java data types categorize values: primitives (int, double) store simple values, objects (String) hold complex data. Choose wisely for efficient and accurate programming.

Numeric Types:

byte:

Size: 8 bits

Range: -128 to 127

Common Usage: Used when memory conservation is crucial, or when working with raw binary data.

short:

Size: 16 bits

Range: -32,768 to 32,767

Common Usage: Similar to byte, used in situations where a larger range than byte is needed.

int:

Size: 32 bits

Range: -2^31 to 2^31-1 (approximately -2.1 billion to 2.1 billion)

Common Usage: Default choice for integer values in most cases.

long:

Size: 64 bits

Range: -2^63 to 2^63-1 (approximately -9.2 quintillion to 9.2 quintillion)

Common Usage: Used when a wider range of integer values is needed, or for representing timestamps.

float:

Size: 32 bits

Range: Approximately ±1.4 x 10^-45 to ±3.4 x 10^38

Common Usage: Used for decimal numbers when precision up to seven digits is acceptable.

double:

Size: 64 bits

Range: Approximately ±4.9 x 10^-324 to ±1.8 x 10^308

Common Usage: Default choice for decimal numbers, provides greater precision than float.

Character Type:

char:

Size: 16 bits

Range: Represents a single Unicode character.

Common Usage: Used to store characters and symbols.

Boolean Type:

Boolean:

Size: Not precisely defined, typically implemented as a single byte

Values: true or false

Common Usage: Used for Boolean logic, conditions, and flags.

comment for more coding questions.

share to your friends..

Important Java buzz words and their meanings

Useful data types in python for developers