Dependency Injection in Spring boot | With Advantages and Disadvantages

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➡️ Notes link: Shared in the Member Community Post (If you are Member of this channel, then pls check the Member community post, i have shared the Notes link there)
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Spring boot playlist: • Spring Boot from Basic...
Pre-requisite: Java ( • JAVA from Basics to Ad... )
Chapters:
00:00 - Problem Exist today for Which Dependency Injection required
04:08 - What is Dependency Injection and its Types
07:43 - Field Injection and its Advantages and Disadvantages
15:39 - Setter Injection and its Advantages and Disadvantages
19:07 - Constructor Injection and its Advantages and Disadvantages
27:29 - Circular Dependency problem and its Solutions
35:56 - Unsatisfied Dependency problems and its Solutions
#springboot #java

Опубликовано:

26 июн 2024

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Комментарии : 61

@mariyajoshkatteboina8749 11 дней назад

Wow, You are a great teacher as well, You way of teaching makes concepts easy, My humble reaquest to you sir, Please do make more videos on springboot it will help us, please!

@eshwarsai5027 7 часов назад

Excellent and amazing explanation. Big Thanks ........for the video

@SoftwareEngineer2-ug5fl 28 дней назад

Awesome video. One request to all viewers, please ask more and more questions in the comment section. It will help others and specially beginner to get more clear view of topics.

@darksidekiller5300 Месяц назад

This was hands down the best Dependency Injection on RU-vid, I've seen this topic from literally every other RU-vidr and no teaches with this much simplicity and depth... Can not thank you enough for providing this level of quality!

@ConceptandCoding Месяц назад

thanks

@chandangupta1822 7 дней назад

This is an amazing lecture, far better than all the Udemy courses on Spring Boot. Please complete the Spring Boot series. btw this series is not available on Udemy business.

@in_tyler_we_trust Месяц назад

Sir please continue this greatest spring boot playlist and hope to get more videos frequently...

@mynksrswt483 2 месяца назад

For those who think they mastered this video after one watch, you might be underestimating things! Take a couple more views to really soak it all in. Trust me, giving it a few extra rounds now could save you from a major 'uh-oh' moment in production later. So buckle up and get comfy with this video! By the way, awesome job on the video, @shrayansh

@prof_as 2 месяца назад

thanks man, was thinking like this only. after i watched again i realized it.

@yashgupta7220 11 дней назад

Bro, you're crazy!! You made the Spring DAMN easy!! Love your content

@VenkatReddy-qi6ec 6 дней назад

thank you so much for your valuable teaching, hope you will complete full stack java developer course, and please upload this complete spring boot course in udemy. good bless you bro.

@nileshpawar5150 2 месяца назад

Very nicely explained

@baburaomulaparthi4531 2 месяца назад

Thanks bro Very Nice explanation

@user-ie9yw4wr2j Месяц назад

Best videos !!!

@motivation_hubPJ 2 месяца назад

hi can you please share some open source java projects links which are nicely written web apps (follows solids & desgin patterns ) or which industry teams look for standardisation and reference. I know there are many but can't figure out the quality .

@in_tyler_we_trust Месяц назад

If you get any please mention here

@ashwanikumarpatel7460 2 месяца назад

In production i always use @Service instead of @component, @Bean …when it’s initialised ?

@raghutata747 2 месяца назад

Hello Shryansh, Can we get more working examples of Dependency Injection.. May be used in some LLD Question, that will be even more helpful.

@rahulas721 2 месяца назад

In the previous video you mentioned we can use @Bean to tell spring what values to pass in the constructor when creating the object. So suppose we have the following User constructor : @Autowired public User( String name, IOrder order ) The order object is injected by using constructor injection. But how will spring know what value of name it has to pass? Do we need to define it using @Bean ( if yes then how will the code look like? ) or is there any other method?

@in_tyler_we_trust Месяц назад

Did you find the answer to your problem?

@cozitsyash1301 Месяц назад

We need to create a bean for String as well ..

@ericsiddiq7634 2 месяца назад

Thanks

@randomguy4822 2 месяца назад

Hi Shreyansh , i had one question, till when are you planning to cover up all the lectures , like by what month will all aspects be covered up

@shreyojitdas9333 Месяц назад

sir whats next after this playlist?

@dwivedishashank9 Месяц назад

22:01 - Not getting any exception when multiple constructors present without @Autowired and compile error is to be observed. Did anyone noticed this?

@narayangoyal295 2 месяца назад

Bhaiya , i love your videos, it will be very helpfull if you make some videos on crypotography i really need that

@ConceptandCoding 2 месяца назад

hi pls check this one : ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-GtSUeAkPEP0.html

@Werewolf5684 Месяц назад

Q1. @Qualifier("OnlineOrderName") : this is we are hard coding in the application write? let say we want now object of Offline Order in our User Object then how can we change that? Q2. Can we write this if we have multiple dependency in User class let say Order and Invoice @Autowired public User(Order order, Invoice invoice) { this.order = order; this.invoice = invoice; }

@Randomvideo2610 2 месяца назад

for setter dependency injection it will inject dependency at startup time or we have to call setter function?

@ConceptandCoding 2 месяца назад

at application startup, if its not marked Lazy

@Suyashlike 2 месяца назад

Hi Sheyansh, very nice video. One confusion I have is regarding last example in the video. Had the "Order" been a base class rather an interface, did we have to use primary or qualifier annotation? And by using these primary or qualifer annotation are we not breaking dependency inversion rule as we are depending on 1 concrete implementation out of many?

@ConceptandCoding 2 месяца назад

good question buddy. Using @Qualifer, we do tell Spring to inject particular concrete class. But it does not break Dependency inversion principle. As our class still uses Abstraction only. But since we are not using @Bean and instead relying on @Primary or @Qualifier which tell spring, which dependency to use, when more than 1 bean present with same interface. (so its more of, that we are providing input to Spring, how to solve the dependency). But you can understand it better, if you try to use @Bean annotation in config class. And from there, you can control, which Bean to return whether OnlineOrder or OfflineOrder whenever Order Bean is requested. So now you will see that our class still follows dependency inversion, as no matter what concrete class object you will add, it will work. Hope that clarifies.

@sahilgarg3460 Месяц назад

Hi Shrayansh, can you reply on below 2 query? 1. As a Java dev who is responsible for adding cicd in project in corporate 2. In production, usually how logs are monitored

@aribesh Месяц назад

Hi Shrayansh, I have purchased the membership. The notes are visible for now, but I read in the perks that the notes will have 2 years of expiry. So, after one month, when I am no longer a member, how will I be able to access the notes?

@himanshudewan7238 17 дней назад

Any idea ?

@nishaaa_maurya Месяц назад

This concludes the Spring Boot tutorial. Are there additional tutorials planned for the future?

@ConceptandCoding Месяц назад

yes

@harshgarg0906 Месяц назад

I have one question Suppose I have an Order Interface and I have two implementation i.e OnlineOrder and OfflineOrder Using the @Qualifier and @Primary I can decide at the start of the tomcat which one to use My question here is that Suppose when the request hit my controller and in the @PathVariable I put online then I need to use the OnlineOrder and if in @PathVariable I put the offline then I need to use OfflineOrder . So how at the runtime I can tell the Spring DI to use the desired bean depending on what is coming as Input . Is there a way to do this?

@ConceptandCoding Месяц назад

yea you can do it. For that you need to use @Bean in that method you can put custom logic (if else condition) and return the object of Online or Offline which you required

@harshgarg0906 Месяц назад

@@ConceptandCoding @Bean will also going to create the object at deployment time only and if i write the if else in controller method then Are we breaking the SOLID principal ?

@ConceptandCoding Месяц назад

no, it will not break. And Today its how done in Live application too. choose object dynamically based on some input

@cozitsyash1301 Месяц назад

Great doubt bro

@DevanshChiluka 2 месяца назад

❤

@naveentmyug Месяц назад

At 14:06, while creating new object for USER class, why we got NPE for order, as while initialization ORDER is being injected in user parameters,

@suryabala6369 Месяц назад

Hi @naveentmyug did you get the answer for this?

@naveentmyug Месяц назад

@@suryabala6369 nopes

@ConceptandCoding Месяц назад

hi, if you are creating USER object using NEW , how ORDER member variable will get initialized. as its marked as AUTOWIRED. And spring will not initialize it automatically. there is Already 1 USER Bean present, which was initialized by Spring, but when you are creating using NEW, its creating new object. hope that clarifies.

@naveentmyug Месяц назад

@@ConceptandCoding yes, now I am good with it. Thanks

@tarunprahladka3230 2 месяца назад

when we get the next videos for the playlist?

@ConceptandCoding 2 месяца назад

i will work on weekend

@surajsri248 Месяц назад

Can we inject more than one constructor in a class

@ConceptandCoding Месяц назад

Yes, internally spring will pick the constructor with most dependency resolved. Try it out

@Cricket-xs1vc 2 месяца назад

Hi Shreyansh, I cannot find the notes for java playlist

@ConceptandCoding 2 месяца назад

pls check member community post section buddy

@Cricket-xs1vc 2 месяца назад

@@ConceptandCoding got the notes thanks Shreyansh

@raghutata747 2 месяца назад

Hello Shryansh, When will the next videos be uploaded?

@ConceptandCoding 2 месяца назад

i will work on this weekend, by next week

@raghutata747 2 месяца назад

@@ConceptandCoding Hello sir, Thank u so much. Please upload in bulk if possible. This is really helping me a lot, specially the way you cover interview expected questions. Exactly those questions are only asked.