what inner and nested clas java

Nested classes in java

// example on inner class in java
class OuterDemo
{
   int num;
   // inner class
   private class InnerDemo
   {
      public void display()
      {
         System.out.println("inner class");
      }
   }
   // access inner class from method within
   void printInner()
   {
      InnerDemo objInner = new InnerDemo();
      objInner.display();
   }
}
public class InnerClassExample
{
   public static void main(String[] args)
   {
      OuterDemo objOuter = new OuterDemo();
      objOuter.printInner();
   }
}

Posted by: Guest on November-23-2020

Source

// Anonymous inner class in java abstract class Anonymous { public abstract void display(); } public class AnonymousInnerExample { public static void main(String[] args) { Anonymous obj = new Anonymous() { public void display() { System.out.println("anonymous inner class example"); } }; obj.display(); } }

// example on inner class in java class OuterDemo { int num; // inner class private class InnerDemo { public void display() { System.out.println("inner class"); } } // access inner class from method within void printInner() { InnerDemo objInner = new InnerDemo(); objInner.display(); } } public class InnerClassExample { public static void main(String[] args) { OuterDemo objOuter = new OuterDemo(); objOuter.printInner(); } }

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