Java 8 has been released in March 2014, so it’s one of the hot topics in java interview questions. If you answer this question clearly, it will show that you like to keep yourself up-to-date with the latest technologies. Java 8 has been one of the biggest releases after Java 5 anno...
Point of Difference Abstraction Encapsulation Definition Hides the complexity of the system by showing only the essential details to the users. Restricts access to certain parts of an object to protect its details. Functionality Focuses on what an object does rather than how it does it Hides the ...
It automatically configures database connections based on dependencies. Developers can customize settings through configuration properties in application.properties or application.yml files. Spring Boot seamlessly integrates with Spring Data JPA, providing a high-level abstraction for database operations....
In the previous question, you learned polymorphism. Now it’s time to expand your knowledge by understandingabstractionas well. A very complicated topic for any Java interview. 1.9.Abstraction vs. Encapsulation? Knowing the difference between abstraction andencapsulationis the key to profoundly understan...
Please refer earlier question for these rules. - If a class field is not used in equals(), you should not use it in hashCode() method. - Best practice for user defined key class is to make it immutable, so that hashCode() value can be cached for fast performance. Also immutable ...
Ques 13: What is the SDLC model that you have used in your previous project? Ans. The answer to this question varies with the candidates. If you have done a project based on Waterfall model the interviewer wil question you on waterfall model, or if you have done agile they will question...
Refer to first question in above list. 2. Have you faced out of memory error? If yes how you fixed ? Tell different scenarios why it comes? http://stackoverflow.com/questions/37335/how-to-deal-with-java-lang-outofmemoryerror-java-heap-space-error-64mb-heap ...
Abstraction. Abstraction in OOP allows us to handle complexity by hiding unnecessary details from the user. That enables the user to implement more complex logic on top of the provided abstraction without understanding or even thinking about all the hidden complexity. Encapsulation. This process of ...
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19. What is the difference between abstraction and encapsulation in object-oriented programming? Two primary concepts in object-oriented programming are abstraction and encapsulation. Abstraction is the process of reducing complex real-world entities down to their fundamental characteristics and simply presen...