I m experienced java developer .. i started watching this playlist to refresh but.. i ended up actually learning making me realize.. i dont know stuff still.However, I loved your teaching way.
there is no hesitation that you are the best trainer. you really understand how one should be taught it means you understand the problem a student face while studying and grasping the concept. love from the capital of india and from Bihar.
Sir, you're tin god and one of my favourite and i like you, god will bless you helping a lot for who needs technical stack to grow their skill-set, hope you provide more content like this, finally your flow of explanation was outstanding, and i like you a lot and a lot more...🔥
00:04 Encapsulation is a part of object oriented programming. 01:33 Data is stored in the brain in the format of variables 02:57 Data access control in object-oriented programming 04:22 Private variables can only be accessed within the same class. 05:56 Data access is restricted using methods. 07:16 Private variables can only be accessed within the class that they are defined in. 08:51 Setting values for variables and accessing them using methods. 10:22 Encapsulation is a way to bind data and methods together
I had a lot confusion about encapsulation before watching this video..now I feel I can understand this concept effortlessly because of your demonstration ❤🎉thank you so much sir
You are using examples from personal life; it’s good to let others learn things well. Try to give a minimum of two examples in each video per topic. Thanks.
you don't need to use a static block if you just want to initialze a field private static String name = "Phone"; would be enough. but if you need some complex manipulations, requires several lines of code, than yes, there static blocks come in
Explanantion was top notch! But my question is we use private access modifier so that other classes can't use it, and then we create get and set method through which we can change and access the value, if we are including get and set method for private variable, why we simply can't keep the vaiable public if in the end we need to access and change the data.
Hi! The main reason for using getter and setter methods lies in control and protection over how variables are accessed and modified. If you make a variable public-for example, your age-anyone can directly change it to any value, including invalid ones like 0 or even a negative number. Such values could lead to errors and potentially break your program. By using a private variable with a setter method, you can control how the variable is updated. This allows you to add validation, or "sanity checks," in the setter method to ensure that only valid data is assigned to the variable. For instance, you could enforce that age must be positive. This approach maintains data integrity and safeguards against unexpected or invalid changes. In short, private variables combined with public setters give you restricted and safe access to variables, ensuring they follow any rules or constraints you set. Hope this clears things up!
I have a doubt from a long time and couldnt find the answer.......We use access modifiers to control the accessiblity within the program to ensure encapsulation.....so if we have a private variable and if still we can access it through a public getter method then what is the use of having a private variable.....it can be public instead right?
Hi! The main reason for using getter and setter methods lies in control and protection over how variables are accessed and modified. If you make a variable public-for example, your age-anyone can directly change it to any value, including invalid ones like 0 or even a negative number. Such values could lead to errors and potentially break your program. By using a private variable with a setter method, you can control how the variable is updated. This allows you to add validation, or "sanity checks," in the setter method to ensure that only valid data is assigned to the variable. For instance, you could enforce that age must be positive. This approach maintains data integrity and safeguards against unexpected or invalid changes. In short, private variables combined with public setters give you restricted and safe access to variables, ensuring they follow any rules or constraints you set. Hope this clears things up!
Yes, but is it important to make the class in such a way that we should asign the private vable value directly withou using the setter method.? Why we need to create the strcuture to set the data only and to fetch the data ? I mean what is the actual real life purpose of doin this activity which you are saying Encapsulation ?
Sir, can u please tell me what is the point if we can access the data and change the data even if it's private? what is the advantage of the variable not being accessed directly.....Please respond as soon as possible sir.
As you heard he said only via methods, so if you don't make "setName" method for example, no one can change the data, while they can GET the data via "getName" it depends on the methods you create. and yeah everyone can touch it if they have your pc, but it's different when it's on the app/game/web you make. Hope it helped. 😊
sir i got ur point but in set method why we used void returntype as uh had told in method concept that we use void as returntype when we dont want to return anything ....plz clear this doubt of mine
it is because in set method we only want to modify the field(variable) . Generally we don't expect the function to give us any value. The methods job is to take the input argument and assign it to object's variable
very good sir i got it but encapsulation means only public method can access it encapsulation means data hiding but we are going to public the data can someone clear mt doubt....
we are not going to public data member instead we are going to public the member functions which help to get and set the value of our private data member see the below code class Encapsulation{ private int x; // now this data member is hidden from outside world as it is private but to set its value and get its value we need to define functions which are public and can be used public void set(int a){ x=a; } public int get(){ return x; } }
@Telusko I have a question sir, We can even call the getAge() method by simply passing the value and calling it under Demo class, even age is private in class Human. I tried it and worked well, which states that we don't need setAge() method to set the value, can simply pass through the getAge() and fetch the value. Please explain sir, how I am wrong and why do we need get, set methods here? I am pretty sure there must be point behind there :) For eg: public int getAge(int a) { age = a; return a; } And while calling it under class demo, we can define: Human obj = new Human(); int final = obj.getAge(56); System.out.println(final);
If u try to just age()method passing the value under demo class from calling function age method to called function age() without get method. If u can declare variables as private u can't access variables without set or get methods. But u did declare variables as private at the same time u used get /set method. That's the reason u got an output(u haven't no error)
The parameter which is passing to setter method is same as the instance variable, then "this" must be used. for ex: public void setAge(String age); { this.age = age; }
U can use that if u set your methods parameters name exactly like instance variables. By the way thats a good practice to use proper name in methods and use this keyword to refer.
public class Main{ public static void main(String[] args) { Human me = new Human(30, "Mario"); System.out.println(me.GetName() + " " + me.GetAge()); } } class Human{ private int age;//private attribute private String name; public Human(int age, String name){//constructor this.age = age;//setting this.name = name; } public void SetAge(int age){//set value this.age = age; } public int GetAge(){//output return age; } public void SetName(String name){//setter this.name = name; } public String GetName(){//getter return name; } }
I m experienced java developer .. i started watching this playlist to refresh but.. i ended up actually learning making me realize.. i dont know stuff still.However, I loved your teaching way.
I guess experienced != knowledgable
the way you explain this is magical. I went through videos to find out what encapsulation is and from you i found it. Highly Appreciated Man!
You've used the perfect word, it is just "magical". Telusko has a special talent for teaching!
Its 2 complete hrs, I'm still watching your playlist. Hats off Mr. Navin 👏
Complete 105 videos
just don't watch practice it also
@@anuanitha5278Completed
Actually sir you're my favorite trainer 🔥
there is no hesitation that you are the best trainer. you really understand how one should be taught it means you understand the problem a student face while studying and grasping the concept. love from the capital of india and from Bihar.
the way you explain any topic is awesome, specially examples....
Sir your teaching skills are very good 💯 it's very helpful Java playlist for beginners thankyou so much and Allah bless you ✨👍
❤
Sir, you're tin god and one of my favourite and i like you, god will bless you helping a lot for who needs technical stack to grow their skill-set, hope you provide more content like this, finally your flow of explanation was outstanding, and i like you a lot and a lot more...🔥
00:04 Encapsulation is a part of object oriented programming.
01:33 Data is stored in the brain in the format of variables
02:57 Data access control in object-oriented programming
04:22 Private variables can only be accessed within the same class.
05:56 Data access is restricted using methods.
07:16 Private variables can only be accessed within the class that they are defined in.
08:51 Setting values for variables and accessing them using methods.
10:22 Encapsulation is a way to bind data and methods together
I had a lot confusion about encapsulation before watching this video..now I feel I can understand this concept effortlessly because of your demonstration ❤🎉thank you so much sir
Thank you very much for explaining the encapsulation clearly ❤im big fan u Naveen garu you teaching skills are awesome
You are superb sir💯💯💯the way of teaching is in easily understandable manner
Without any doubt, I can say that your training videos is really helpful for anyone to understand the concepts. Thanks for sharing .
Encapsulation=Binding our data with the methods. Only way to access data is with the methods.
You are using examples from personal life; it’s good to let others learn things well. Try to give a minimum of two examples in each video per topic. Thanks.
You are Superb, the way you taught is excellent.
you are my favorite traiiner sir😮💨😀😀
Just explained like a wow.Omg wow 🔥
That is fantastic, sir, you are a legend.
🎉now I know encapsulation,all thanks to you Sir❤
Sir your way of explaining is just brilliant!👏
Your teaching style is marvelous❤. Love from Nepal!
this is absolutely understandable java concepts simply ,thanku naveen sir
Your Teaching is Great Sir! 💛
your explination is awesome sir, easy to understand and grasp the concept.thank You🙏
Sir your explanation is amezing tqs alot you are equal to God for me
breaks my head and takes his name and says "oh there is his name"🤣🤣
you stored lot of information in your brain and by seeing itself everyoone can understand :) just kidding , lovely explanation
This videos are really awesome ❤.
Thank you so much for your efforts.
you don't need to use a static block if you just want to initialze a field
private static String name = "Phone";
would be enough.
but if you need some complex manipulations, requires several lines of code, than yes, there static blocks come in
Thank you for clear explanation sir🙏
I am extremely happy to see your vedioed
best ever example you told here sir
Nice explanation of getters and setters
Explanation way is so easy
amazing teacshing method 👍👍
very good explaination sir.
Best java Tutorial for beginner or professional
Superb sir. Thank you very much.
really easy to understand sir 😍😍thanku
expected one.. Thank you sir..
thank you sir 👑
Thank You
"break my head and say... Hey! I got the data" 🤣🤣🤣🤣
Nice explanation
Explanantion was top notch! But my question is we use private access modifier so that other classes can't use it, and then we create get and set method through which we can change and access the value, if we are including get and set method for private variable, why we simply can't keep the vaiable public if in the end we need to access and change the data.
Hi! The main reason for using getter and setter methods lies in control and protection over how variables are accessed and modified. If you make a variable public-for example, your age-anyone can directly change it to any value, including invalid ones like 0 or even a negative number. Such values could lead to errors and potentially break your program.
By using a private variable with a setter method, you can control how the variable is updated. This allows you to add validation, or "sanity checks," in the setter method to ensure that only valid data is assigned to the variable. For instance, you could enforce that age must be positive. This approach maintains data integrity and safeguards against unexpected or invalid changes.
In short, private variables combined with public setters give you restricted and safe access to variables, ensuring they follow any rules or constraints you set.
Hope this clears things up!
Great explanation thankyou
I have a doubt from a long time and couldnt find the answer.......We use access modifiers to control the accessiblity within the program to ensure encapsulation.....so if we have a private variable and if still we can access it through a public getter method then what is the use of having a private variable.....it can be public instead right?
Hi! The main reason for using getter and setter methods lies in control and protection over how variables are accessed and modified. If you make a variable public-for example, your age-anyone can directly change it to any value, including invalid ones like 0 or even a negative number. Such values could lead to errors and potentially break your program.
By using a private variable with a setter method, you can control how the variable is updated. This allows you to add validation, or "sanity checks," in the setter method to ensure that only valid data is assigned to the variable. For instance, you could enforce that age must be positive. This approach maintains data integrity and safeguards against unexpected or invalid changes.
In short, private variables combined with public setters give you restricted and safe access to variables, ensuring they follow any rules or constraints you set.
Hope this clears things up!
@ thank you so much
Thank youu
Yes, but is it important to make the class in such a way that we should asign the private vable value directly withou using the setter method.? Why we need to create the strcuture to set the data only and to fetch the data ? I mean what is the actual real life purpose of doin this activity which you are saying Encapsulation ?
Tqsm sir for sharing knowledge thoroughly🤝🫂
Sir, can u please tell me what is the point if we can access the data and change the data even if it's private? what is the advantage of the variable not being accessed directly.....Please respond as soon as possible sir.
As you heard he said only via methods, so if you don't make "setName" method for example, no one can change the data, while they can GET the data via "getName" it depends on the methods you create. and yeah everyone can touch it if they have your pc, but it's different when it's on the app/game/web you make. Hope it helped. 😊
Allah bless uuu🎉
HE is talking about the movie wall -e where he used the words pixel
pls give a me a like
sir i got ur point but in set method why we used void returntype as uh had told in method concept that we use void as returntype when we dont want to return anything ....plz clear this doubt of mine
it is because in set method we only want to modify the field(variable) . Generally we don't expect the function to give us any value. The methods job is to take the input argument and assign it to object's variable
Thanks ❤
Can we achieve encapsulation by declaring variables protected instead of private ?
I just learned about encapsulation right now😂, does this mean I should stop using constructors and use setters instead?
instaead of the word behaviour we can use methods right ..? please correct me If I am wrong ...!
yup you can behaviour means you are doing an action ~ function~ method :)
I'm trying to catch up something though not used to vs code
Sir what if we keep method as private 🤔
29/11/2024 -> Streak 1 completed
Sir pls provide notes for this playlist
U r lit sir 🔥
Mr.Navin PHP OOP should be in your consideration in TH-cam plz❤
❤tnku sir
ya sir we are ailiens 🤣🤣
very good sir i got it
but encapsulation means only public method can access it
encapsulation means data hiding
but we are going to public the data
can someone clear mt doubt....
we are not going to public data member instead we are going to public the member functions which help to get and set the value of our private data member
see the below code
class Encapsulation{
private int x;
// now this data member is hidden from outside world as it is private but to set its value and get its value we need to define functions which are public and can be used
public void set(int a){
x=a;
}
public int get(){
return x;
}
}
@Telusko
I have a question sir,
We can even call the getAge() method by simply passing the value and calling it under Demo class, even age is private in class Human. I tried it and worked well, which states that we don't need setAge() method to set the value, can simply pass through the getAge() and fetch the value.
Please explain sir, how I am wrong and why do we need get, set methods here? I am pretty sure there must be point behind there :)
For eg:
public int getAge(int a)
{
age = a;
return a;
}
And while calling it under class demo, we can define:
Human obj = new Human();
int final = obj.getAge(56);
System.out.println(final);
If u try to just age()method passing the value under demo class from calling function age method to called function age() without get method. If u can declare variables as private u can't access variables without set or get methods. But u did declare variables as private at the same time u used get /set method. That's the reason u got an output(u haven't no error)
anyhow you are setting the value inside that method, that's why there is no error. they are not the default methods right?
telugaa bhaiyaa
why there isn't this.age = age or return this.age ?
Yes you can, but the variable name which is coming as a parameter should be 'age' .
The parameter which is passing to setter method is same as the instance variable, then "this" must be used.
for ex:
public void setAge(String age); {
this.age = age;
}
U can use that if u set your methods parameters name exactly like instance variables. By the way thats a good practice to use proper name in methods and use this keyword to refer.
Why are you not updating VS Code? Please update VS Code.
obj.setAge(a: 30); I didn't understood this
so its basically POJO and BEANs
6:28 Jeffrey Dahmer's way of accessing the data
public class Main{
public static void main(String[] args) {
Human me = new Human(30, "Mario");
System.out.println(me.GetName() + " " + me.GetAge());
}
}
class Human{
private int age;//private attribute
private String name;
public Human(int age, String name){//constructor
this.age = age;//setting
this.name = name;
}
public void SetAge(int age){//set value
this.age = age;
}
public int GetAge(){//output
return age;
}
public void SetName(String name){//setter
this.name = name;
}
public String GetName(){//getter
return name;
}
}
❤
adam scandler's pixel
Are you from telugu
mm
fire uuuuu
you can user my name as a trainer hahahaaahahhaahahahah
I use by the way )))))hahahaha
And your age is 41
you cannot define someone's age. you are ageist. you are cancelled.
You use too many words, cut it by 1/3