How to access " static data " ?

How to access " static data " ?

~Any data declared as static is shared by all objects.
~Only single copy of static data is created and this copy is owned and maintained by class.
~Static runs only once before main.
~Benefits of of static data :
  -It saves memory.
  -It permits sharing.
~ To access " static data " syntax used is :
    className.dataName

static{}

-static{} are used to initialize static data of a class.

static function 

~Function that work only and only on static data should be declared as static.
~To invoke a static function  syntax used is :
   className.functionName(< argument >)

Example:

     OUTPUT :

static import

~ It is a feature of jdk 1.5
~It is used to import static data and static functions of a class.
~Types of static import are :
-import static java.lang.Math.*; // bring all files
-import static java.lang.Math.PI ; // calls the function PI
-import static java.lang.Math.pow; // calls the object pow.