OOP 1 | Introduction & Concepts - Classes, Objects, Constructors, Keywords

The first video of the complete object oriented programming (#OOP) course in Java. Covering an introduction, important concepts about classes, objects, constructors, memory management, keywords, wrapper classes, and more.

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👉 Resources

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Timestamps:
0:00:00 Teaser
0:00:30 Introduction
0:01:53 Notes
0:03:08 OOP Introduction
0:07:45 Java Classes
0:10:35 Example of a Class
0:15:47 Java Objects
0:17:05 Class vs Object
0:18:18 Properties of Object
0:20:29 Objects Introduction
0:23:55 How to access instance variables?
0:27:35 How to create objects?
0:34:09 Dynamic Memory Allocation
0:38:24 How to manipulate objects?
0:42:20 Java Constructors
0:49:53 By Default Constructor
0:53:26 Creating Constructors
0:56:20 "this" keyword
1:09:04 Constructor Overloading
1:15:18 Calling a constructor from another constructor
1:18:31 Why we don't use "new" keyword for creating primitive data types?
1:20:35 Memory Allocation of "new" keyword
1:23:36 Wrapper Classes
1:28:07 "final" keyword
1:34:36 Garbage Collection
1:41:07 Outro

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got placed in Morgan Stanley (26LPA)
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[snow__den]

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[aashutoshkumar]

Timestamps:
0:00:00 Teaser
0:00:30 Introduction
0:01:53 Notes
0:03:08 OOP Introduction
0:07:45 Java Classes
0:10:35 Example of a Class
0:15:47 Java Objects
0:17:05 Class vs Object
0:18:18 Properties of Object
0:20:29 Objects Introduction
0:23:55 How to access instance variables?
0:27:35 How to create objects?
0:34:09 Dynamic Memory Allocation
0:38:24 How to manipulate objects?
0:42:20 Java Constructors
0:49:53 By Default Constructor
0:53:26 Creating Constructors
0:56:20 "this" keyword
1:09:04 Constructor Overloading
1:15:18 Calling a constructor from another constructor
1:18:31 Why we don't use "new" keyword for creating primitive data types?
1:20:35 Memory Allocation of "new" keyword
1:23:36 Wrapper Classes
1:28:07 "final" keyword
1:34:36 Garbage Collection
1:41:07 Outro

[kreynusr]

Kunal, you have the best courses across youtube, hell across the internet, that I have ever seen. You explain everything in detail but do not overwhelm us. Props to you. Even though I'm taking a bootcamp to become a full stack developer, I always come to your videos to fully understand something.

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This guy is making the world a better place <3

[sandro-offq]

You explained a lot more, a lot more comprehensively than my lecturer did during 4 lectures.

[PradeepYadav-fgyg]

1:27:42 standing by his words when he says he'll teach you everything, literally teaching everything fan moment for me🙏🙏

[tirakv]

Just passed through the first lesson and i'm so flabbergasted that this is a free tutorial. Cheers man. You're a great teacher!

[ayushmansrivastav]

Now it feel like " Yhi h OOPs ?? Isi ke liye itta preshan tha 🥺" . Amazing ♥️

[KaisarAnvar]

I'm so happy I discovered you. I've been to several interviews and I am familiar with quite a majority of these topics but, right at the beginning, you surprised me with such a direct, straight-to-the-point, humble, yet precise approach to explaining the first topic. This means that the rest of the lecture will be just as brilliant as the beginning. I remember reading a quote that says "If the tip of the waterwall is clean, the rest of the water is clean". Heard of this somewhere but I don't remember where 😇 thanks again, and looking forward to the journey to brush up on my weaknesses now.

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[its_SR]

just for my future reff.
30:39 non initialize object give null as output
31:45 how obj gets created
39:11 just printing reference variable

[saikatbishal]

Never had the hold of 'this' keyword until this video. Thanks much for clarifying my concepts.

[prernagupta]

Probably the best OOPs Playlist among all oops videos I have yet came across on Youtube.