Top level and inner class examples

// A top-level class
class OuterMost{
   private String str = new  String("OuterMost");
   public void printName(){
      System.out.println("Class name: "+ str);
   }
   //A static class
   static class StaticNestedOne{
      static String str = new String("StaticNestedOne");
      static void printName(){
         System.out.println("Class name: "+str);
      }
      static class StaticNestedTwo{
         static String str = new String("StaticNestedTwo");
         static void printName(){
            System.out.println("Class name: "+str);
         }
      }//End of StaticNestedTwo
   } //End of StaticNestedOne
   //An inner class
   class InnerOne{
      public String str1 = new String("InnerOne");
      //An interface within an inner class
      public interface IDPrinter {
         static final int BASE_VALUE=100;
            public void printID();
      }
      public void printName(){
         System.out.println("Class name: "+ this.str1 );
      }
      //Nested inner class that implements an interface
      class InnerNestedOne implements IDPrinter{
         int id;
         protected String str = new String("InnerNestedOne");
         InnerNestedOne(int id){
            this.id = id;
         }
         public void printName(){
            System.out.println("Class name: "+ this.str);
         }
         public void printID(){
            System.out.println(BASE_VALUE+id);
         }
         public void printAllClasses(){
            printName(); //local method
            InnerOne.this.printName(); //enclosing class method
            //creates an object using a private
            //inner class in the outer scope
            InnerTwo innerTwo = new InnerTwo();
            innerTwo.printName();
            OuterMost.this.printName(); //top level method
            StaticNestedOne.printName();
            StaticNestedOne.StaticNestedTwo.printName();
         }
      }// End of InnerNestedOne
   }//End of InnerOne
   // A private inner class
   private class InnerTwo{
      public String str = new String("InnerTwo");
      public void printName(){
         System.out.println("Class name: "+ this.str);
      }
   }// End of InnerTwo
}//End of OuterMost

//A class that uses OuterMost and it's nested and inner classes
class Outside{
   public static void main(String arg[]){

      OuterMost.StaticNestedOne.printName();
      OuterMost.StaticNestedOne.StaticNestedTwo.printName();

      OuterMost outer = new OuterMost();
      OuterMost.InnerOne inner = outer. new InnerOne();
      inner.printName();

      OuterMost.InnerOne.InnerNestedOne innerNested = inner. new InnerNestedOne(10);
      innerNested.printName();
      innerNested.printAllClasses();
   }
}// End of Outside