Today I Learned in Java -Data types and variables..

Data Types:

In java there are two types of data types:

• Primitive data type.

• Non-Primitive data type.

Primitive data type:

Primitive data types are the basic building blocks that store simple values directly in memory.Primitive data types are fixed.

• boolean

• char

• byte

• int

• short

• long

• float

• double

Boolean:

• Stores true or false values

char:

• char Stores a single character/letter or ASCII values

byte:

• Stores whole numbers from -128 to 127

  int:
  

  • Stores whole numbers from -2,147,483,648 to 2,147,483,647
    ## short:

• Stores whole numbers from -32,768 to 32,767

long:

• Stores whole numbers from -32,768 to 32,767

float:

• float temperature = 36.6f;

• This stores a decimal number representing body temperature.

double:

• Stores fractional numbers. Sufficient for storing 15 to 16 decimal digits

Non-Primitive data type:

Non primitive data types are non fixed They are ,

• string

• object

• array

Variables:

Data types are used in variable,there are two types are variables they are,

• Local variable

• Global variable