Java Abstract Classes | Java Course in Tamil | Logic First Tamil

[@037_cse_jananir7]

Your java playlist is one of the best java tutorial in youtube

[@gowthamselvaraj7793]

abstract class shape{ abstract void area(int a,int b); } class square extends shape{ public void area(int a,int b){ System.out.println(a*b); } } class triangle extends shape{ public void area(int a,int b){ System.out.println(a*b/2); } } class Main { public static void main(String[] args) { square s=new square(); triangle t= new triangle(); s.area(10,20); t.area(10,20); } }

[@uzumakinaruto-ys3wp]

How can you give two parameters for square?

[@virat_pattt]

Unga voice super aa iruku 😍😍 also explaining slang also just awesome 😎

[@spooja4549]

Please add all the codes in description, it will be easy for us to revise before the interview day

[@aravindkumar8743]

14:20 define panniye aganum nu nammala thitudhuuu.....👍🤣🤣😝😝🤣🤣ultimate nga

[@nimalj7233]

object names m1 and m, m2,m3,m4 nu kodukama unique names koduthu explain panni innum nalla puriyum

[@gowtham7819]

Thanks Mam. Best Explanation 👍

[@sarankumar6360]

Vera level ka🤩spr a purithu

[@singertamil0145]

your voice so cute and explain slag also very nice and easy to understand very well thank you class mam😍😃

[@JegaBright]

நன்றி அக்கா 🙏

[@kajamoideen9062]

12:11 line 5 la abstract void ah //committed pannirunga abstract ah remove pannitu verum void method kodukalamay.??

[@gokulkannane3653]

You make it easy...Thank you Mam.

[@_NAGASUBRAMANIANS]

Solution for the exercise:::: ----------------------------------------------------------------- import java.util.*; abstract class Common{ int length,breadth; abstract int area(); } class Square extends Common{ int length; Square(int length){ this.length=length; } int area(){ return length*4; } } class Triangle extends Common{ int length,breadth,height; Triangle(int length,int breadth,int height){ this.length=length; this.breadth=breadth; this.height=height; } int area(){ int a=breadth*height; return a/2; } } public class Main { public static void main(String[] args) { ArrayListc = new ArrayList(); c.add(new Square(4)); c.add(new Triangle(2,4,4)); for(Common i:c){ System.out.println(i.area()); } } }

[@aazhinisenthilkumaran7780]

Mam can you please add the code in the description or in the pinned comments so that we can revise easily before exam??

[@LogicFirstTamil]

chk github link.

[@vigneshrp1294]

thank you so much.....your explanation is very clear for all the topics.

[@kannanb0317]

Mam, I have an one doubt? What's the difference between ( Member m1 = new Student(); and Student s1 = new Student(); ) in the time of object initialization?

[@sivamsivam700]

Actually in Member m1 means, not memory allocation in heap for base class(m1), you just create a member class object reference variable. New student(); means create a new child class (Student)object.this is what memory allocation for child class. That child class reference assigning to the base class object variable. In base class object variable we can store base class object reference and also can store child class object reference.(polymorphism) You can't create new object for base class.{new memeber ().} Because base class is a abstract class.

[@navaskhaniv-b8719]

@@sivamsivam700but here we cannot create the object for base class. right ? then what is the purpose of declaring Member m1 here ? just a query.

[@mukeshkannan4546]

Becoz all students ,teachers and Staffs were under the inheritance of Member class. We can't able to create different arrays for different classes (becoz it's a long process.)

[@CARevanthkumar]

package Absract; abstract class Shape { abstract void area(int n); } class Square extends Shape { void area(int n) { System.out.println("Square:" + (n * 4)); } } class Triangle extends Shape { void area(int n) { System.out.println("Triangle:" + (n * 3)); } } public class Exercise { public static void main(String[] args) { Shape[] s = new Shape[2]; s[0] = new Square(); s[1] = new Triangle(); for(Shape s1: s) { s1.area(4); } } }

[@jaibeembeema5086]

Wow excellent thank u so much

[@ananthkumark6870]

Mam Your Teaching is Very easy to learn ....Please do the playlist for DBMS and SQL

[@jamil-lz3rk]

Please for sql video

[@LogicFirstTamil]

i have added mysql playlist

[@aathisrees7730]

Hi cute explanation And sweet voice

[@sivamsivam700]

Mam member class ku array objects create panum pothu new Member [ ]; nu podurom. New keyword abstract class ku use panna kudathu sonnigalay mam. elements kaana index references create pandrathunala athu allow pannuthaanga maa New Member( ); Ipdi podum pothu heap la oru object create pandrathunaala allow pannaliya mam. Correct taanu sollunga mam

[@baskarj9419]

Mam, abstract methodla irukura concrete methods and variablesa eppadi access pandradhu.derived classla Override pannama access panna mudiyuma?

[@065.poorwinsankar.r.k3]

Mam..neenga last ah kudukura programs ku ans enga iruku??

[@aarav9621]

So basically idhu inheritance dhane?

[@yeshwanthiganesh7061]

Super akka I got the output

[@gokulnathps8246]

Great explanation

[@shahnaz9026]

Do you have a solution for this exercise? I got an error..

[@R3d0ps]

super video akka

[@reeganthomas44]

Thank you 🙂👍

[@shahnaz9026]

Do you have a solution for this exercise?

[@karthicknagaraj8089]

I wanna ur example code !

[@aswinsurya5503]

Accessor and mutator method sollunga

[@greenenergy1817]

vara level mam 🙏🥰🥰🥰

[@aktherMHS]

Hats off !

[@manikandanvelayutham4768]

Akka ipo abstract cls ku Object create panna mudiyathuna athula iruka concrete method na epdi call panrathu....

[@senthilkumaran3149]

sub class muliyama call pannum

[@uzumakinaruto-ys3wp]

Answer for the Question // Shape public abstract class Shape { abstract void area(); } class Square extends Shape { private double side ; public Square(double side){ this.side = side; } @Override void area(){ double squareArea = side*side ; System.out.println("Area of Square ="+squareArea); } } class Triangle extends Shape { private double height ; private double base; public Triangle(double height,double base){ this.height = height; this.base = base; } @Override void area() { double triangleArea = 0.5 * base * height; System.out.println("Area of Triangle ="+triangleArea); } } //Main class public class Main { public static void main(String[] args) { Square square = new Square(23); Triangle triangle = new Triangle(20,10); // triangle.area(); // square.area(); Shape[] area = new Shape[3]; area[0]= new Square(10); area[1]= new Triangle(20,10); area[2]= new Square(30); for (int i = 0; i < area.length ; i++) { area[i].area(); } } }

[@shinChan-wx8gg]

Super 👍

[@kbharathotk]

Nice voice slang

[@shortboy9976]

mam can you saggest some best book in c++ and java

[@LogicFirstTamil]

Effective Modern C++ by Scott Meyers, for java - core java by Horstmann

[@shortboy9976]

Thank you mam

[@joshstudioz8834]

akka...java ku unga videos pathale concepts lan clear ah irrukum la???...

[@LogicFirstTamil]

Yes. For understanding all concepts its enough.

[@shahnaz9026]

Do you have a solution for this exercise?

[@gokulnath6373]

Mam first u said for abstract u can't create object but after very mins u create array object for abstraction mam.so my question if array means i create for abstraction?? confuse mam

[@LogicFirstTamil]

No no. I have mentioned in the video. on left side of = you can create a reference of abstract class. But on right side you cannot create abstract object with the "new" keyword. Observe carefully.

[@gokulnath6373]

@@LogicFirstTamil mam thanks a lot

[@swathi1045]

sis junit ku video poturndhingana link anapunga sis

[@LogicFirstTamil]

No i havent

[@kanish10]

Hii akka 😊😊 akka nenga nala solli tharinga akka enaku oru help akka na ippo second year akka Na BTech IT group akka enaku Java solli Kudukiringala akka plz 🙏

[@LogicFirstTamil]

i dont take classes. u can easily learn from youtube itself

[@shahnaz9026]

Do you have a solution for this exercise?

[@studentofklnce472]

Mam please upload source code, it will help us to note

[@LogicFirstTamil]

chk github logicfirsttamil

[@karthickkumar1380]

niceeee

[@ranjithrk4212]

Mam PHP solli thanga

[@LogicFirstTamil]

i dont know PHP . Sorry

[@TheProtagonist555]

PHP padikadhinga bro... Pick languages like Javascript or Python..

[@037_cse_jananir7]

@@LogicFirstTamil please teach all dsa concepts with java programs. it will be very useful to us. Your teaching is excellent

[@LogicFirstTamil]

@@037_cse_jananir7 I already have DSA playlist. Chk that.

[@037_cse_jananir7]

@@LogicFirstTamil okay mam

[@surya-ow4wr]

✌✌

[@programmer5688]

Interface...along with abstract class sollunga mam.. Please

[@LogicFirstTamil]

Will upload

[@programmer5688]

@@LogicFirstTamilmam JDBC um teach pannuvinga la... Please sollunga please open an insta account as same as utube channel to ask doubts man

[@LogicFirstTamil]

@@programmer5688 I will try to give overview not in depth.

[@LogicFirstTamil]

And sorry abt insta, i will not be having time to clear all doubts. Hope you understand

[@programmer5688]

@@LogicFirstTamil ok mam