Core Java With OCJP/SCJP: OOPs(Object Oriented Programming) Part-16 || overloaded constructor

[@kousalyamariappan2492]

Durga sir has given left, right and center to Java 😀

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[@Lakshmankablog]

Really.

[@mohanrammanikandan7939]

Thank you, sir. The last 12 minutes has covered the entire concept with interview questions. :)

[@amitahlawat7008]

Top quality teaching by a top quality teacher

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[@nareshmurty5511]

Best of the Best explanation.

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[@ravishankarbaranwal6917]

Specially thanks Sir for this session because in it at the end you revised all the topics...

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[@mtfmayurtechandfacts3414]

If u were not there wid us....no one will teach in a such way to us. Tq for being.

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[@SaurabhYadav-hh9ex]

Thank you Sir..... Thank you so much again🥰🥰🥰🥰🥰

[@arjunkataksh]

31:12 Compiler will give left and right :D

[@priyachoudhary3271]

Clear clarity sir😊

[@MANUCRIXZ]

wonderful explanation sir

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[@kislayapant6119]

Awesome teacher. many more teachers like you are required all over world sir :)

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[@kislayapant6119]

@@DurgaSoftwareSolutions thanks sir

[@ranveervaghela7030]

Amazing as always :)

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[@hiteshkumar2076]

Best java tutorial

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[@omardjebiri2674]

Thank you sir Durga

[@santoshkodamble2266]

data struture and algorithm also teach

[@abdulrahmans6879]

Thank you so much sir....!

[@tajdarkhanafridi2222]

Very nice explanation ....

[@prasadmahakal2361]

Thank uhh Sirji

[@ArchanaSingh-xl7gk]

Sir u r great 🥺

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[@sumitbadugu417]

Please make video on DSA

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[@pratiktekade9126]

Thank you sir

[@salmankhan-br4ng]

In 13:44 video..if you can pause..you can check once this.name and this.age both are in single mehod. My dout is it possible to applicable two this() keywords in single method????

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[@wamiqueiqbal246]

Salman there is diffirence between this() and this.

[@reeteshtripathi]

Sir All These Language Fundamentals are still same?, because I am learning now and these videos are uploaded 6 year ago...

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[@tattitatooo655]

Bro indeed true his lectures are something

[@tattitatooo655]

Are you a java developer

[@bharathkoneru4008]

On making a recursive constructor call, Recursive Constructor Invocation error is thrown at run-time by JVM but not at compile-time. Only warnings are shown in the class file. It is throwing the error only when tried to call the constructor by creating object. Any changes happened in java 1.8?

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[@ashishroutray9486]

Sir in static overflow concept you told that identification of static memeber and execution of static memeber and then execution of main method but in construction recursion without creat an object who it's show error the main method is static and it should execute and give output "hello" Sir can you explain how this constructor recursive invocation error come without creating a constructor.

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[@thesaggy21]

main method is static so even if we creating object it will show error during recursive method call as the only thread here is main and if there is a "possibility" of Recursive Constructor Invocation then only it will give error,, we know all the variable in interface is static by default so there is no instance variable available inside the interface hence it cannot contain constructor

[@shalinimarimuthu937]

Hi Sir, You have told inheritance and overriding concept not applicable for constructor, but for case 2(45:30 ) example sir using inheritance.A bit confusing sir.can give explanation?

[@soloforever6635]

He is referring the constructors can't be called by using the inheritance concept, but you can call the methods right so, you cannot use the parent constructors in child but you can use the methods. just have look again 16:18 again it may clear your doubt

[@ayushtiwari4068]

what is the use of constructor in abstract classes

[@DurgaSoftwareSolutions]

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[@vkj5742]

Ayush Tiwari ,Abstract class contains constructors to perform initialization to the instance variables which are inherited by the child class from that abstract class.

[@shankars4281]

A class may extend abstract class and then it will inherit all the properties of abstract class. If we don't initialize value for these fields or properties, child class don't get values. so, we can have constructor for abstract class, even though we can't create object of it.

[@jvsnyc]

@@shankars4281 Even more than what you guys said. It would be possible for the abstract parent class to have some private instance variables that must be initialized, but since they are private there is no other way to initialize them than only calling the super( ) constructor with necessary parameters.

[@yashbhave1072]

Hello Sir,as you said earlier that inheritance concept not applicable in constructor but here in 41th mini u used inheritance,this is creating confusion sir can you plz solve this?

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[@rgsivacts]

It is not inheritance, but calling super class constructor! Inheritance means by default parent class methods are available to child class. But this concept is not applicable for constructor. Hope this helps!

[@balla4004]

@@rgsivacts Thanku

[@petchiyogeshwar4405]

Parent class constructor must be executed twice. First in the instance Control Flow due to the creation of child object and next in the call to the parent class constructor in child class constructor using super().

[@balla4004]

@Sandeep Rawat Thanku

[@chetanputtappanavar3425]

Sir, in first example, in test(double d) constructor you dirctly used println statement instead of super(); or this ();

[@LalitKumar-ls4tu]

Internally compiler automatically write the code in 1st line. super()

[@ayushtiwari4068]

if super(); is used in parent constructor then which constructor will be called? if parent constructor is called then why it is not giving recursive constructor error or stackoverflow RuntimeException

[@DurgaSoftwareSolutions]

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[@bharathkoneru4008]

For every class in java, Object class is the parent class of all classes. Object class constructor is invoked. And remember recursive constructor call/invocation happens only with use of this() i.e., only within the current class.

[@LalitKumar-ls4tu]

class test { test() { System.out.println("this is test"); } } class over extends test { over(int i) { System.out.println("this is default"); } public static void main(String args[]) { over obj1 = new over(10); } } output: this is test this is default how is this possible if you are telling inheritance is not applicable for constructor. i am confused

[@sateeshbabu5792]

i tried same inheritance is possible , but according to sir explanation inheritance is not possible. any inputs on this, please class test { test() { System.out.println("test constuctor"); } } class c extends test { c(int i) { System.out.println("child constuctor"); } } class inf1 { public static void main(String[] args) { c c1=new c(10); } } Ans : test constuctor child constuctor

[@LalitKumar-ls4tu]

ya that why i am confused i also tried before h it is possible bt according to sir it is not

[@anand_kanekal]

over(int i) { super(); System.out.println("this is default"); } Conclusion: It is because the compiler is placing super() keyword when the constructor is called, which is thus responsible for calling parent class constructor. I hope this helps!

[@deadfish404]

This concept is not inheritance.. you should watch "Instance Control Flow" to understand this. Whenever you create a child object, parent class instance blocks and parent class constructor are Executed first. Then the child class instance blocks and child class invoked Constructor is executed. In your program the same happened. you created the object of child class . so the parent constructor executed first then the child constructor(invoked) got executed.

[@LalitKumar-ls4tu]

ya i also think it's happened but i want confirmation thx

[@rojasidda2006]

sir , why recursive constructor invocation is a compile time error.

[@sateeshbabu5792]

Nice sir thanks u

[@sravanb8654]

sir why this() should be in first line is there any reason???thankss

[@ramachandranraman3551]

thankyou so much sir

[@pavankumar1539]

Sir without creating object could we call constructor

[@balla4004]

@Sandeep Rawat thanku

[@sudipupadhyay6935]

sir can we use super(10.5) in case of int arg in second line or not?

[@abhishekyadav8974]

sudip upadhyay no we can't

[@ritiksrivastava9069]

my compiler is treating constructor as method why?? anyone please

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[@somnathchakraborty6245]

29-05-2024