Java, .NET, PHP, PYTHON, ANGULAR, ML, Data Science, Testing, CI Tutorials in Easy Languages.

"Best Software Training, Internship, Project Development center of Indore India, Helpline 780506-3968"

  ---Inner Class Concept in Java---


Using this concept we will create class inside class ,It is also called Nested Class:-

1 Dynamic Inner class:-

   It Contain Dynamic data member and member function.

  class A
 {
       class B
       {

      }


}

Example of Inner Class:-

class A
{
    class B
    {
         public void fun1()
         {
             System.out.println("B");
         }

    }
  public void fun()
         {
             System.out.println("A");
         }

public static void main(String args[])
{
     A obj = new A();
     obj.fun();
     obj.new B().fun1();
}

}
2 Static Inner Class:-

     It Contain Static Data member and member function.

   class A
 {
       static class B
       {

      }


}


Example of Static Inner Class in Java:-

class A
{
   static class B
    {
         public static void fun1()
         {
             System.out.println("B");
         }

    }
  public void fun()
         {
             System.out.println("A");
         }

public static void main(String args[])
{
     A obj = new A();
     obj.fun();
     A.B.fun1();
}

}


Anonymous class in Java:-
If we want to define the functionality of Interface and abstract class under any method block instantly then we can create an anonymous class.
Example of it's:-





abstract class An
{
   public abstract void fun();
}
interface In
{
    void fun1();
}
class Bn 
{
   public static void main(String args[])
   {
      An obj=  new An(){

             public void fun()
                 { 
                         System.out.println("Bn");
                }

            };

      In o = new In()
      {
                public void fun1()
                 { 
                         System.out.println("In");
                }

      };
      obj.fun();
      o.fun1();
   }

}







Post a Comment

POST Answer of Questions and ASK to Doubt

Previous Post Next Post