basic data types in java

Data types in java are two type' s

1. Primitive 
2. Reference

Mostly Used Primitive Data Type' s

1. boolean 
2. char
3. int
4. byte
5. float
6. long
7. double
8. String

Data Type: boolean

Bytes: 1 bit.

Description: this data type represents 1 bit information, mostly used in the true/false conditions.

Possible values: true/false 

Data Type: char

Bytes: 16 bit unicode.

Description: this data type used to store character' s.

Data Type: int 

Bytes: 32 bit signed representation.

Description: this data type used to store integer of signed representation.

Data Type: byte 

Bytes: 8 bit signed representation.

Description: this data type used to store integer of signed representation, this type is useful when we need to store an array of integer's with max of 8 bit' s. so, we can save 24 bit' s when compare to the int data type.

Data Type: float 

Bytes: 32 bit

Description: this data type used to store integer with single-precision/decimal values.

Data Type: long

Bytes: 64 bit signed representation.

Description: this data type used to store integer with single-precision/decimal values.

Data Type: double

Bytes: 64 bit signed representation.

Description: this data type used to store integer with single-precision/decimal values.

Data Type: String

Bytes: 64 bit signed representation.

Description: this data type used to store integer with single-precision/decimal values.

Example code:

package snippets1;

/**

 * Created by root on 11/3/16.

 */

public class DataTypeTest {

    public static void main(String args[]){

        boolean status = true;

        char a = 'A';

        int b = 12;

        byte e = 12;

        float f=3.14f;

        long c = 1235;

        double d = 12345.23;

        String str = "programming";

        System.out.println("boolean: "+status+"\nchar: "+a+"int: "+b+"\nbyte: "+e+"\nfloat: "+f+"\nlong: "+c+"\ndouble: "+d);

    }

}