Java Tutorials: Initialization Block in Java

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Initialization Block in Java: It's a block of code.

Instance Initialization Block:
- They are related to object, Whenever a object is created, It get intialized.
- Instance variables are unique to object, each object has its own copy
Static Initialization Block:
- They are class variables
- They are attached to class
- It'll execute only once, whatever number of objects you have
- Used to initilized the block code.

Do watch video for more info.

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Wow. You have a LOT of videos. These new ones are way more basic and fundamental than many of the fancier ones you already presented. I am gong to eventually spend a lot of time on this channel. It took a little getting used to your presentation and all, but I am there. I understand pretty much 100% of the stuff you are saying the first time, which to me is the Gold Standard in presentation.

jvsnyc

One thing you might want to mention here, when you have, in general, multiple overloaded constructors, the compiler acts as if you included all the instance initialization blocks in order, right at the top of any constructors you have that don't begin with a call to this(, , ) to call one of those other overloaded constructors, but after the relevant super( ) call. I think it is interleaved with any data members that you initialize in-line in the class definition. I'll go check now. Some people think it is just an interview question, but it affects how your code runs...I will watch the "Constructors in Java" tutorial, out-of-order, next.

jvsnyc

Thanks a lot and it really solved a year long doubt 😊

jarvisfriday

Why we need the instance initializer block since we can initialize the objects directly in the class

moayadal-falahi

could have added about the constructor sequence, otherwise it's informative content

deeproy

Bro u have to explain how a instance and static block works not the output we get when we use it. You are just correcting your coding instead of explaining how it works

mohdsameer

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