Java Developer Interview Questions and Answers for 6 years of Experienced candidate | Code Decode
In this video of code decode we have covered Java Developer Interview Questions and Answers for 6 years of Experienced candidate
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*Question - **What is an IOC Container? How Does it Work**?*
An IoC Container is a software framework component that manages the objects (beans) in your application. It takes over the responsibility of creating, configuring, and assembling these objects and their dependencies.
- *Object Creation:* Traditionally, you’d manually create objects in your code. With an IoC container, you define the objects (beans) you need in your application using configuration files (XML or annotations) or Java classes. The container then takes care of instantiating these objects.
- *Dependency Injection:* Objects often rely on other objects to function properly (dependencies). Instead of manually creating and passing these dependencies around, you declare them in your object definitions. The IoC container injects (provides) the required dependencies to the objects it creates. This creates a loose coupling between objects, making your code more modular and easier to test.
- *Object Lifecycle Management:* The IoC container also manages the lifecycle of objects, including initialization and destruction. This frees you from writing boilerplate code for these tasks.
What is Dependency Injection?
In software development, dependency injection (DI) is a technique for providing an object with the objects (dependencies) it needs to function. Here’s a breakdown of the key concepts:
*What are Dependencies?*
- Dependencies are other objects that a class or function relies on to perform its work effectively.
- Examples:
- A car depends on an engine, wheels, and other parts to function.
- A database access class depends on a database connection object to interact with the database.
What is Application Context & its use?
In Spring Boot applications, the ApplicationContext is a central interface that plays a critical role in managing the objects (beans) used throughout your application. It’s essentially a container that provides the following functionalities:
*1. Bean Management:*
- The core responsibility of the ApplicationContext is to manage the objects (beans) that make up your application.
- These beans are typically defined using annotations or XML configuration files.
- The ApplicationContext takes care of creating, configuring, and assembling these beans according to the specified configuration.
*2. Dependency Injection:*
- Beans often rely on other beans to function properly. These are called dependencies.
- The ApplicationContext facilitates dependency injection by automatically providing the required dependencies to the beans it creates. This eliminates the need for manual dependency creation and management, leading to loosely coupled and more maintainable code.
*3. Resource Access:*
- The ApplicationContext provides access to various resources your application might need, such as property files, configuration files, and message bundles.
- This simplifies resource retrieval and ensures consistent access throughout your code.
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Пікірлер: 46
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@CodeDecode
3 ай бұрын
😊😊
Please more video's on java experienced as last time while switching ur videos helped a lot...
@CodeDecode
3 ай бұрын
Sure Yoshita 😊👍
Recently, I've gone through this channel and subscribed, and really, it was awesome the way they explained the concepts along with real-time examples of both theory and programming. I'm very lucky to be part of this subscriber list, and my only concern here is that it would be really helpful if we had devops-related topics(Linux, Jenkins, Ansible, K8s and AWS) also.
Without your videos interview preparation won’t complete
@CodeDecode
2 ай бұрын
Thanks for the motivation
Nice explanation better to add some code and execute it will be easily understood. Great work keep posting.
Can you provide that document. It will be handy for quick revision.
Hi Thank you for all videos. when are you uploding for 8+ years?
Need more such videos. Thanks team
@CodeDecode
3 ай бұрын
Sure Sayan 👍😊
Please upload interview questions for 8+ year of experience people also
@CodeDecode
2 ай бұрын
Sure we will upload it soon
That was more than great thanks ma’am
@CodeDecode
2 ай бұрын
😊👍
You are simply amazing 😊
@CodeDecode
3 ай бұрын
😊😊
Can you please share this pdf or docx file
Awesome, Great Work ☺
@CodeDecode
2 ай бұрын
Thanks 😄
Nice video.. Mam please one video on spring security, jwt token Please mam.. New change in spring security..
Thank you for the sharing
@CodeDecode
3 ай бұрын
👍😊
Yes we need video for 8+
@CodeDecode
3 ай бұрын
👍
Please add questions for 8+ years of experience.
@CodeDecode
2 ай бұрын
Soon we are going to upload it
Do you teach or provide course? Wanted to learn from you.
Thanks a lot... Any way to get these notes?
@CodeDecode
3 ай бұрын
Everything is usually attached in the description below. Is it not there ?
Helped 😊
@CodeDecode
3 ай бұрын
😊
Hey, Code decode, I want to purchase your Spring boot microservice course, Could you provide more discount, It's actually very less discount from your coupon compared to Udemy sale. Udemy sale usually sale course on 349 or 399. Could you provide coupon that discount in that range pls?
@CodeDecode
2 ай бұрын
Sure please send your mail id. We will send you coupon code there
What is spring container?
@CodeDecode
3 ай бұрын
One who manages all bean lifecycle for u so that u are free from that task u do in core Java
java for 8 years interview questions also plz upload
@CodeDecode
2 ай бұрын
Sure amit we will create it soon
@amitjoshi940
2 ай бұрын
@@CodeDecode ❤️
i think hashtable is not failsafe
please questions for 8 + experience
@CodeDecode
2 ай бұрын
Sure we'll upload it soon
✌️😎👍
@CodeDecode
3 ай бұрын
😊👍
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