Various Data Types in Core Java

 Data-Types were available in Java.

         Hello guys, Today we are looking for Data-Types in Java. There are various data types are available in Core Java. So let's jump to the blog post.

Data Types in Java

       A variable is an identifier that denotes a storage location used to store a data value.

       As you see in the above diagram or figure the data types are divided in this manner. Data Type is a type assign to variable names that specify the type of data we store in the variable. Actually, there are mainly two types in java 1) Primitive and 2) Non-Primitive.

1) Primitive Data Types:-

Primitive Data Types are those data types which represent single data member. In java, there is a total of 8 (Eight) Primitive Data Types. Primitive Data Types also called Intrinsic Data Types.
The primitive data types also divided into some types of Numeric and Non-Numeric Data Types.

Numerical:- 

  a) Integer-
      1) byte- One byte- -128 to 127.
      2) short- Two bytes- -32,768 to 32,767.
      3) int- Four bytes- -2,147,483,648 to 2,147,483,647.
      4) long- Eight bytes- -9,223,372,036,845,775,808 to 9,223,372,036,845,775,807.
   b) Floating Point-
      5) float- 4-bytes- 3.4e-038 to 1.7e+0.38.
      6) double- 8-bytes- 3.4e-038 to 1.7e+308.

Non-Numerical:- 

   7) char- 2-bytes
   8) boolean- 1-bit- True and False.

2) Non-Primitive Data Types:-

Reference/Non-Primitive Data Types are those data types that represented a group of data members. In JAVA we have data these types like classes. All the classes are Non-Primitive data types.
eg. Array, enum, String, etc.

Some examples of variables:-

int no1 = 23;
float x = true;
double no3;

Syntax for declraring a variables

data_type variable1, var2, var3..... varN;
data_type variable_name = value;