Jun 2, 2013 · Your interface reference can hold the object of the implementing class. You are implementing an anonymous class and assigning it to the reference of interface, which is absolutely legal in JAVA.

You don't create an instance of an interface, you create an instance of a class which implements an interface. e.g. Map<String, String> map = new LinkedHashMap<String, String>(); The Map is an interface and LinkedHashMap is a class which implements an interface.

Learn how to create an object for an interface in Java, including examples and explanations to enhance your understanding of Java programming.

You can never instantiate an interface in java. You can, however, refer to an object that implements an interface by the type of the interface. For example, A test = new B(); //A test = new A(); // wont compile. What you did above was create an …

Sep 10, 2024 · In Java, we cannot create objects of interfaces directly because interfaces are abstract by nature. They cannot be instantiated like regular classes. Attempting to do so will result in a compilation error. However, even though we cannot create objects of interfaces, we can achieve similar behavior using a technique called interface instantiation.

To access the interface methods, the interface must be "implemented" (kinda like inherited) by another class with the implements keyword (instead of extends). The body of the interface method is provided by the "implement" class: myPig.animalSound(); . myPig.sleep(); } } Why And When To Use Interfaces?

Mar 28, 2025 · We can’t create an instance (interface can’t be instantiated) of the interface but we can make the reference of it that refers to the Object of its implementing class. A class can implement more than one interface.

In Java, interfaces cannot be instantiated directly because they don't provide implementations for their methods. However, you can create objects from classes that implement the interface. This guide will explain how to create an object from an interface in Java through implementation.

Jun 11, 2024 · In Java, an interface is an abstract type that contains a collection of methods and constant variables. It is one of the core concepts in Java and is used to achieve abstraction, polymorphism and multiple inheritances. Let’s see a simple example of an interface in Java: // Constant variable String LED = "LED";

We can create an object of an anonymous class, that implements the interface: Anonymous classes enable you to make your code more concise. They enable you to declare and instantiate a class at the same time.