Explain primitive Data types of JAVA

Java defines 8 primitive types:


byte

  • Smallest integer type
  • It is a signed 8-bit type (1 Byte)
  • Range is -128 to 127
  • Especially useful when working with stream of data from a network or file
  • Example: byte b = 10;

short

  • short is signed 16-bit (2 Byte) type
  • Range : -32768 to 32767
  • It is probably least used Java type
  • Example: short vId = 1234;

int

  • The most commonly used type
  • It is signed 32-bit (4 Byte) type
  • Range: -2,147,483,648 to  2,147,483,647
  • Example: int a = 1234;

long

  • long is signed 64-bit (8 Byte) type
  • It is useful when int type is not large enough to hold the desired value
  • Example: long soconds = 1234124231;

char

  • It is 16-bit (2 Byte) type
  • Range: 0 to 65,536
  • Example: char first = ‘A’; char second = 65;

float

  • It is 32-bit (4-Byte) type
  • It specifies a single-precision value
  • Example: float price = 1234.45213f

double

  • It uses 64-bit (8-Byte)
  • All math functions such as sin(),cos(),sqrt() etc… returns double value
  • Example: double pi = 3.14141414141414;

boolean

  • The boolean data type has only two possible values: true and false.
  • This data type represents one bit of information, but its "size" isn't something that's precisely defined.

Primitive Data types of JAVA

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