Data Types in Java

In this post i will explain the concept of Data Types in Java.
When we write a program we have to use some variables, constants etc and for using these variables we have to declare them first.
For declaring these variables there should be some datatype of that variable so that its storage can be determined.
So in Java there are following types of Data Type:

• Integers 
• Floating Point Numbers
• Characters 
• Boolean

1)Integer: This category contains byte,short,int,long types.
                  byte    ==>  8 bits
                  short   ==>  16 bits
                  int       ==>  32 bits
                  long    ==>  64 bits

2)Floating Point:This category contains float,double types.
                  float       ==>  32 bits
                  double   ==>  64 bits

3)Characters: This category contains char type.
                   char     ==>  16 bits

4)Boolean:This type has 2 values true,false.