Anonymous inner classes in Java

/* Knowledge Point: Anonymous inner class function:     anonymous inner class is also an inner class without a name      because there is no name, the anonymous inner class can only be used once, It is often used to simplify code writing      but there is a precondition for using anonymous inner classes: You must inherit a parent class or implement an interface *///abstract class abstract class person{     public abstract void eat ();} Interface Class (USB interface Specification) Interface usb{    public void insert ();} Class  anonymousinnerclassdemo{    public static void main (String [] args)      {        //using anonymous inner classes on abstract classes         person p = new person ()          {            public  void eat ()             {                 system.out.prinTLN ("eat something");            }         };        usb u =  new usb ()         {             public void insert ()              {                 system.out.println ("Usb u ...");             }        };         p.eat ();  //calls the Eat method in the anonymous inner class         u.insert ();  // Call the Insert method in the anonymous inner class     }}

Anonymous inner classes in Java