Can a class have interface and vice-versa?

Asked by Last Modified  

7 Answers

Learn Java

Follow 0
Answer

Please enter your answer

Suprio Dutta

Tutor

Interface is used to support multiple inheritance only.
Comments
Dislike Bookmark

Talent with Professional Experience

No a class cannot have interface. But vice versa is true
Comments
Dislike Bookmark

Software Testing Trainer(Automation)

how its possible both has different meaning you cant enclosed it
Comments
Dislike Bookmark

12 years of MNC company work experience on java ,J2ee technologies

Yes.Class can have interface viceversa.
Comments
Dislike Bookmark

Trainer

I normally used this “What is the difference between an Abstract Class and an Interface” as a quick way to gauge someone. Lots of times, its the first or second question I will ask. I cannot tell you how many times people will mess this question up. 9 times out of 10, people read about it at some www.basicinterviewquestions.com...
read more
I normally used this “What is the difference between an Abstract Class and an Interface” as a quick way to gauge someone. Lots of times, its the first or second question I will ask. I cannot tell you how many times people will mess this question up. 9 times out of 10, people read about it at some www.basicinterviewquestions.com (not a real site hehe), giving the canned response of “You can define default functionality in an abstract class and you can just define functions in an interface”. The curve ball is thrown when you ask “Why would you use one over the other?”. That will earn you the ‘deer in headlights’ look. The other 1 out of 10 you will get a “I never had to use that so I don’t know”. At the top level, the are a few basic difference. Abstract classes allow for default default function definition. This means that whatever class extends the abstract class will have access to this. If we have a base class where all the classes will perform the same function, then we can define that in our Abstract class. An interface is a list of functions or properties that if a class implements it, it will have to have those functions defined within it. It is a situation of “Is-A” vs “Can-Do-this”. Objects that extends an Abstract class “Is-A” base class. Objects that implement “Can-Do-This”. Now if I asked this question and got the answer, yes, that would be the correct answer. However, I want to know why one would want to use an interface over an abstract class, and vice versa. read less
Comments
Dislike Bookmark

Trainer

No, a class cant have interfaces but it can implement interfaces. But viceversa is not true.
Comments
Dislike Bookmark

Core Java Training

Yes, 100% yes. A class can have an Interface and an Interface can have a class.
Comments
Dislike Bookmark

View 5 more Answers

Related Questions

best source to learn java from?
Main source if information on Java is oracle documentation. But it takes your time to read through, a lot more than you expect. Better prefer a trainer who can give what you need.
Himanshu
Can anyone know if there are tools/apps for representing the objects/classes/methods in the JVM in pictorial way?
rational rose and ibm software architect can be used for design and representation
Raghavendra Reddy
0 0
View Comments7
What are the benefits of online training / e-training when compared to traditional contact training?
time saving and comfortable class time schedule..
Sadhu Sreenivasa Rao
Hi, I am pursuing MBA 1st Year. I want to learn Digital Marketing. Is it right for career growth, or should I choose to learn some other technologies? If yes, please give me your suggestions that help me to get a JOB in the IT Sector.
Hi Sai, To find right career path you need to try things ( Which is long way). I would suggest you to learn multiple things ( implementation is important part) and then find your intrest and dive in to...
Sai
What are the benefits of attending Java coaching classes?
Java is good programming language and more powerful. if you need to learn good concept of programming then Java is best because you need to write your own code manually. there are many other IDE which...
Selvi
0 0
View Comments5

Now ask question in any of the 1000+ Categories, and get Answers from Tutors and Trainers on UrbanPro.com

Ask a Question

Related Lessons

1.1. Reverse an array in Java.
public class Main { public static void main(String args) { int arr = {1, 2, 3, 4, 5}; for (int i = 0; i < arr.length / 2; i++) { int temp = arr; arr = arr; arr = temp; } System.out.println(Arrays.toString(arr)); }}

Vivek J.

0 0
View Comments0
Introduction to Course Content
Video about what we are going to learn throughout the Java Training Session .

Jtcindia Java Training Center

0 0
View Comments0
JAVA Question 1 for beginners
String x="We are learning";String y="mistakes happen";int z=1000;System.out.println("Java is easy. "+x+" programming and "+y+" "+z +" times"); what is out put this code

Vivek J.

0 0
View Comments0
Class and Objects in Java
Class is a template or a blueprint which is used to describe an object. On other hand Object is a reference of a class which follows all the stuff written inside the class. How about taking the whole tour in the following video

Kalyani Jawade

1 0
View Comments0
1.2. Find the largest element in an array.
public class Main { public static void main(String args) { int arr = {1, 2, 3, 4, 5}; int max = arr; for (int i = 1; i < arr.length; i++) { if (arr > max) { max = arr; } } System.out.println("Largest Element: " + max); }}

Vivek J.

0 0
View Comments0

Recommended Articles

Why Java is the Most Popular Programming Language

Designed in a flexible and user-friendly demeanor, Java is the most commonly used programming language for the creation of web applications and platform. It allows developers to “write once, run anywhere” (WORA). It is general-purpose, a high-level programming language developed by Sun Microsystem. Initially known as an...

Read full article >

Top 5 Reasons to Learn JavaScript

Before we start on the importance of learning JavaScript, let’s start with a short introduction on the topic. JavaScript is the most popular programming language in the world, precisely it is the language - for Computers, the Web, Servers, Smart Phone, Laptops, Mobiles, Tablets and more. And if you are a beginner or planning...

Read full article >

Java: An Object-Oriented Language

Java is the most commonly used popular programming language for the creation of web applications and platform today. Integrated Cloud Applications and Platform Services Oracle says, “Java developers worldwide has over 9 million and runs approximately 3 billion mobile phones”.  Right from its first implication as java 1.0...

Read full article >

Some Popular IT Courses in Current Market

In the domain of Information Technology, there is always a lot to learn and implement. However, some technologies have a relatively higher demand than the rest of the others. So here are some popular IT courses for the present and upcoming future: Cloud Computing Cloud Computing is a computing technique which is used...

Read full article >

Find Java Certification near you
Java Certification in Bangalore
Java Certification in Hyderabad
Java Certification in Pune
Java Certification in Chennai
Java Certification in Delhi
Java Certification in Mumbai
Java Certification in Kolkata
Java Certification in Noida
Java Certification in Gurgaon
Java Certification in Ghaziabad
Online Java Training

Looking for Java Training Classes?

Learn from the Best Tutors on UrbanPro

Are you a Tutor or Training Institute?

Join UrbanPro Today to find students near you