Class notes java programming language

Basic data type
Variables are nothing butreserved locations to store values.thIS means that

When you create a variable you reserve some space in memmory.

Based on the data type of variable the operating system allocates memmory

And decides what can be stored in the reserved memmory.there fore by

Assigning different data types to variables.you can store integers ,decimals,

Or character in these variables.

There are two data types available in java

 Primitive data type
 Non-primitive data type

Primitive data type
There are eight primitive data types supported by java.primitive data types are

Predefind.by the language and named by a keyword.let us now look into detail

About eight primitive data types.

Byte

 Byte data type is an 8 bit signed two is compliment integer
 Minimum value is 128
 Maximum value is 127
 Defult value is 0
 Byte data type is used to save space in large arrays,mainly in place of
integers,since a byte is four times smallen than an int
 Example byte =100,byte b=-50

Short

 Short datais a 16-bit signed two’s complement integer