SJ Programming Solutions

🚀 Ace Your Java Interviews with These Top 50 Commonly Asked Questions🚀

If you're preparing for a Java interview, here's a list of essential questions you should be ready to answer:

1. Why Java / Features of the Java
-> Platform indépendant -> What is platform independent
-> Object oriented programming language
->Simple to Learn
->Secure and Robust

2. Difference between while and do while ?
3. What is for loop in Java ?
4. When we should go for switch case ?
5. If else , else if , for loop , switch case
6. What is static keyword ? When to use it ?
7. What is final keyword ?
8. What is Transient keyword ?

9. What are the OPPS concepts in the Java ? Explain with real time example of each
->Class and Objects
->Abstraction
->Encapsulation
->Polymorphism
->Inheritance

10. How to achieve Polymorphism in Java ?
->through Method overloading and method overriding
11. What is difference between method overloading and method overriding ?
12. What is inheritance ? Why we use inheritance ?
13. Is java support multiple inheritance if yes/no Why ?
14. How to achieve multiple inheritance in java ?
15. What is abstract class and abstract methods in Java ?

16. What is String class in Java ?
17. What is the JVM , JRE , JDK ?
18. What is constructor in Java ? Why we use constructor ? How to create constructor ?
19. Super and this
20. What is exception handling in java ?
21. Types of exception handling ?
22. How to create exception in java ?
23. Can you explain 5 commonly used exceptions ?
24. What is try , catch , finally , throw and throws ?
25. Difference between throw and throws ?
26. How to create custom exception or user defined exception in Java ?
27. Do you know what is try with resources ?
28. Can we have multiple catch with try ?

29. What is collection ? Can you tell me which collections you have used so far ?
30. Explain difference between List and Set interface
31. When we should go for ArrayList and when for LinkedList?
32. What is hashSet ?
33. What is HashMap ?
34. Internal implementation of Hashmap?
35. What is Dashcode method ? What is equals method ?
36. Hashmat use which data structure internally ?
37. What is iterator in java ?

38. What is garbage collection in java ?
39. What is immutable class ?
40. Can you create custom immutable class in Java ?
41. What is singleton class ?

42. What are the java 8 features you know ?
43. Can you explain what is Lambda expression ?
44. What is stream API ?
45. What is map and filter methods in java ?
46. Which are terminal operations in Java ?
47. What is Optional class?
48. What is Functional Interface ?
49. What is default and static methods in java 8 interface ?
50. Why they have introduced it ?

#java #javainterviewquestions #javainterview #learnjava

1 year ago | [YT] | 4

SJ Programming Solutions

🌟 Hello Everyone! 🌟

I'm excited to announce a brand-new series of Java tutorials, where I'll cover all the essential topics from scratch! Are you ready to embark on this learning journey with me?

Let me know if you're interested in joining this series!

🔗 Watch the First Session Now: https://youtu.be/x9Cd4NgcTz8

Thank you !

1 year ago | [YT] | 2

SJ Programming Solutions

Hello Everyone,

To schedule the free mock interview on Java , Spring , Hibernate , SpringBoot skillset please send mail to below mail id.

mail : sjprogrammingsolutions@gmail.com

Thank you !

1 year ago | [YT] | 2

SJ Programming Solutions

Can we override the static methods in Java ? #javainterviewquestion

1 year ago | [YT] | 1

SJ Programming Solutions

Watch this video if you want to understand how to sort the data based on particular field in java8 stream API

1 year ago | [YT] | 2

SJ Programming Solutions

Do you know how to sort the Student based on totalMarks in Java using stream API ?

#javainterviewquestions

Watch the video :

https://youtu.be/ltHm_RA53sI

1 year ago | [YT] | 2

SJ Programming Solutions

Global Exception Handling in the SpringBoot Project . Watch below video to understand how to handle exception globally in SpringBoot and What is @ExceptionHandler and @RestControllerAdvice annotation ?

https://youtu.be/rkEYmvPaCZs

1 year ago | [YT] | 3

SJ Programming Solutions

Do you know what is ResponseEntity in spring boot ?

https://youtu.be/lolJv8Gdz7o

2 years ago | [YT] | 2

SJ Programming Solutions

New Video !!!

https://www.youtube.com/watch?v=9fZyV...

2 years ago | [YT] | 1

SJ Programming Solutions

Do you know how to perform SpringBoot REST API CRUD Operations using Spring Data JPA ?

https://youtu.be/9fZyVWkBDgk

2 years ago | [YT] | 2