Search Interview Questions
| More than 3000 questions in repository.|
There are more than 900 unanswered questions.
Click here and help us by providing the answer.
Have a video suggestion.
Click Correct / Improve and please let us know.
|Interview Questions and Answers|
|Ans. 1. Regulation / Enforcement / Policy / Contract , It's primary use|
2. Use as a collection of utility methods(since java 8 through default methods)
3. Collecting constants together, As Interface are lighter, it makes sense to use them instead of classes if no getters and setters required.
4. Creation of Custom Annotations
5. Special services like marker interface
|Help us improve. Please let us know the company, where you were asked this question :|
|Like Discuss Correct / Improve  interfaces   uses of interfaces in java Asked in 1 Companies|
|Differences between abstract class and interface ?|
|Why can't we have diamond problem with interfaces ?|
| What is the difference between List, Set and Map ?|
What are the different Java Collections Interfaces ?
|What are Marker Interfaces ? Name few Java marker interfaces ?|
|Can we declare interface methods as private ?|
|Why do we need Thread class even in case we execute thread using runnable interface ?|
|Which of the following doesn't extend Collection interface ?|
|If an Abstract class has only abstract methods, What's the difference between such a class and an interface ?|
|What is an API ( Application Programming Interface ) ?|