Prev Next

Java / Interface

Can an Interface implement another interface?

No. Interface doesn't provide implementation hence it is not possible.

However an Interface can extend (inherit) another interface, also multiple interface 

public interface MyMainInterface extends ParentA, ParentB {

}

interface ParentA{
	
}
interface ParentB{
	
}

It's right time to invest in Cryptocurrencies Dogecoin! Earn free bitcoins up to $250 now by signing up.

Earn bitcoins upto $250 (free), invest in other Cryptocurrencies when you signup with blockfi. Use the referral link: Signup now and earn!

Using BlockFi, don't just buy crypto - start earning on it. Open an interest account with up to 8.6% APY, trade currencies, or borrow money without selling your assets.

Join CoinBase! We'll both receive $10 in free Bitcoin when they buy or sell their first $100 on Coinbase! Available in India also. Use the referral Join coinbase!

Invest now!!! Get Free equity stock (US, UK only)!

Use Robinhood app to invest in stocks. It is safe and secure. Use the Referral link to claim your free stock when you sign up!.

The Robinhood app makes it easy to trade stocks, crypto and more.

Webull! Receive free stock by signing up using the link: Webull signup.

More Related questions...

What is a Marker(Tag) Interface? Advantages of Inner Interface. What are the access modifiers applicable for the nested interface declared inside a class? Can an interface inherit/extend multiple interface? Example of a nested interface from Java API. Inner Interface in Java. Can an Interface implement another interface? Are interfaces also inherited from Object class? Can a class be defined inside an Interface? Are Nested interfaces declared static? can we have non-static inner interface? Syntax for inner interface. Should the nested interface must be public? Can we define a class inside an interface? Advantage of having a class inside an interface. What is the difference between an Abstract class and Interface? Can a method inside a Interface be declared as final or static in Java? Can an Interface extend another Interface? Why interface is allowed to extend multiple interface whereas class can inherit only one class? Can an Interface be final? Give few examples of a marker interface? Can I define private and protected variables in an interface? What is Externalizable? Difference between Serializable and Externalizable. Does Externalizable extends Serializable interface? Can you specify the accessibility modifier for methods inside an interface? What is abstract Interfaces in Java? Can a interface define static initializer in Java ? What is functional interface in Java 8. Why do we implement interfaces in Java? What are the rules for writing lambda expressions in Java 8? What is SAM interface in Java 8? How will you call a default method of an interface in a class? Explain type inference in Java 8. Explain the difference between lambda expression and anonymous class in terms of “this” reference. What is Optional in Java8? Can we initialize Optional value as null in Java8? Difference between Optional flatMap() and map() in Java8. Does interface uses all Object class methods? Can interface have instance fields? Can interface have instance method? How JVM invoke special behavior in case of marker interface? How to write your own marker interface? Can we have private interface method? Can an interface have main method? Can you modify the value of an interface field? Can we have private method/static method in Interface ?
Show more question and Answers...

Abstract Class

Comments & Discussions

Interviews Questions

About Javapedia.net

Javapedia.net is for Java and J2EE developers, technologist and college students who prepare of interview. Also this site includes many practical examples.

This site is developed using J2EE technologies by Steve Antony, a senior Developer/lead at one of the logistics based company.

contact: javatutorials2016[at]gmail[dot]com

Kindly consider donating for maintaining this website. Thanks.

Copyright © 2020, javapedia.net, all rights reserved. privacy policy.

DMCA.com Protection Status