Most trickiest Spring Boot AOP Interview Questions for Experienced | AOP Advice | Code Decode
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- čas přidán 30. 05. 2023
- In this video of code decode we have explained AOP Advice which is the most trickiest question of Spring boot AOP
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Aspect and Advice in Aspect-Oriented Programming
Aspect-Oriented Programming (AOP) is a programming paradigm that aims to modularize system-wide concerns, such as logging, security checks, and error handling, by separating them from the core business logic. A key concept in AOP is the aspect, which is represented by a class where we define pointcuts and advices.
An advice is the behavior that addresses system-wide concerns and is associated with a specific join point in the program execution flow. It is represented by a method that will be executed at the designated join point. There are different types of advice, including before, after returning, after throwing, after, and around.
A pointcut is an expression that defines the join points where a particular advice should be applied. It specifies the conditions under which an advice will be triggered. For example, a pointcut may specify that an advice should be executed before a certain method is invoked or after a method throws an exception.
Join points are specific points in the program execution flow where aspects can be plugged in. They represent the different stages or events in a program's lifecycle where the advice can be applied. Examples of join points include method invocations, method executions, field access, and exception handling:
@Before:
This advice executes before a join point, but it does not have the ability to prevent the execution flow from proceeding to the join point unless an exception is thrown. It is commonly used for tasks such as logging or security checks that need to be performed before a method is executed.
@AfterReturning:
This advice is executed after a join point completes normally, i.e., without throwing an exception. It is often used for tasks like resource cleanup or updating caches.
@AfterThrowing:
This advice is executed if a method exits by throwing an exception. It allows you to handle exceptions and perform appropriate actions, such as logging or error handling.
@After:
This advice is executed regardless of how a join point exits, whether it is through normal return or by throwing an exception. It can be used for tasks like resource cleanup or releasing locks.
@Around:
This is the most powerful advice type. It surrounds a join point, such as a method invocation, and has the ability to prevent the actual method execution. It takes a ProceedingJoinPoint as a parameter, which allows you to execute the target method. By calling the proceed() method on the ProceedingJoinPoint, you can proceed with the original method execution.
The order in which advice is invoked depends on the advice type. In the case of @Around advice, it is invoked first, followed by @Before advice. This allows the @Around advice to control the method execution and decide whether to proceed or return a response on behalf of the method.
In summary, AOP introduces the concept of aspects, which are represented by classes containing pointcuts and advices. Advices are the behaviors that address system-wide concerns and are associated with specific join points. Pointcuts define where the advices should be applied. There are different types of advice, including @Before, @AfterReturning, @AfterThrowing, @After, and @Around. Each type of advice provides a different way to intercept and modify the program's execution flow. The @Around advice is the most powerful, as it can prevent method execution and modify the arguments and return values.
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I would like to take this opportunity to thank you very much as your content has helped me a lot in getting job in one my dream company. You have explained the concepts in an excellent way. Keep up the good work all the best!!
best videos I've ever watched on AOP and Spring boot. These were so tough for me and you've made me so much confident that I can explain anyone and write new logic around my legacy code now. I'm thankful to you mam, these are so much helpful for experiences developers, you have no idea how much you helped me. I'm a big fan of you now and wish you a great success ahead. Stay blessed.
Finally I found some quality video which clarified my doubts regarding aspect. I was struggling in this topic. Thank You madam.
Please post the next part covering the remaining concepts in AOP. Previous videos helped me a lot. Thank you :)
AOP Spring boot Interview Questions: czcams.com/play/PLyHJZXNdCXsciQu5hHevaNMqLMTBhOV8o.html
Here you go
i have decided now to watch all your videos and make notes of it... thanks for posting the video with detail..
👍👍 keep learning keep shining Man 🌟🌟🌟
All three AOP videos i went through them and i feel like now i understood the concept at the basic. Thank you So much for the clear Expanation!! and please post the next video on poxies and what are aop advantages and disadvantages of aop. I have one sugestion, Plesae provide the code link somewhere so that we can refer them quickly.
Yes please continue with the next video also …
very informative.Thanks for posting such tricky questions
You’re welcome
Please make more such video. Really ver6 helpful
Sure Nikita we will create more videos like this
Thankyou for this. Please upload the remaining part of aspect.
sure we will create it soon
Please post the next part also, Please please keep uploading. It is really helping many
Sure we will create more soon
yes pls make video of crosscutting too.. we are in same flow..
Sure 👍
Very very informative, this is my go to channel for interview prep, keep posting these kind of stuff 🫡
Thanks 😊😊
You are super madam, requesting you to share the next video on cache and other interview questions.
Sure 😊
Thank you.
😊😊
You can lead India to produce good java developers. Keep posting such a nice content.
☺️☺️ now a days people are really smart to catch up quickly. Glad to be a tutor here🙏🙏👍👍
Thank you mam please proceed with the playlist
sure
where do we find the code which you have coded as part of the video? can you please share us the link?
Please make next video of this series.
Sure 👍
Mam waiting for next video in aop series
Sure we will create it soon
yes please
👍
Please cover remaining part of the video
Sure we will cover it soon
Can u make a video on spring security with end to end implementation plzzz....🙏
czcams.com/video/udTU4kmii8A/video.html
czcams.com/video/_WDDMAkLEU8/video.html
Pls Share Github Link or source Code
Mam waiting for next video in AOP series
Sure 👍👍