STATIC INNER CLASS 
whenever any class is defined inside the scope of another class using 'static' keyword then it is class static inner class.
#  how call inner class
 OuterClassName.InnerClassName
#  following characteristics   are:
  1) It can be  instantiated independently means  object of outer class is not required for   

       instantiation of static inner class.
 OuterClassName ref = new OuterClassName()
   2) It can directly used the reference of  priavte  static member of its outer class.

   class Outer
{
  priavte static int  a=10;
  class Inner
{
  public void display()
{
  System.out.println("access value of a"+a);// private member of class call in inner class
}
}
--------------------------------------------------------------------------------- 
JRE MAKE FOLLOWING CHANGE
  1)  inside outer class
jre create accessor method for each priavte static datamember inside outer class
   static int accessor$0000()
{
  return a;
}
2) inside inner class
jre convert the call  of priavte static data member  with accessor method  of its outer class

# method of inner call
  public void display()
{
 
System.out.println("access value of a"+Outer.accessor$000());
}




nonstatic class on next post.....