Core Java With OCJP/SCJP: Innerclass Part- 2||normal innerclass||regular innerclass

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[kartikeybajpai]

Sir, its 2024 .. and i still watch your videos when i have to refer any java concept... You are far better than those bhaiya and didi channels teaching these languages without explaining the core concepts and fleecing students.. Sheer example of OLD IS GOLD..

[dinkarinjosh]

2020 Update: Its good to understand the general concept, however questions at the end of the video, do not hold water after Java 8. As you can access the local members of the enclosing block from inside the inner class method (if they are final or effectively final). This works in Java 8 and above try yourself.



public class Test {
int i =10;
static int j = 99;

public void mi(){
int k =100;
final int m = 40;
class Inner1{
public void m2(){
System.out.println(i +" " + j +" "+ k+ " "+ m);

}
}
Inner1 i = new Inner1();
i.m2();
}

public static void main(String[] args) {
Test t = new Test();
t.mi();
}
}

[MrCoder-xjyi]

[1.8V + versions] At 1:04:00, we can access local variables but they need to final either explicitly of implicitly(i.e once assigned cannot change)

[highwaylife_.]

1:05:00
After Java 8 local variable doesn't not need to declare Final explicitly, but It should be effectively final.
Effectively Final means value of local variable should not change inside that method.

[sumitbhardwaj]

you have the gift of maa Saraswathi. you are one of the fabulous teacher I ever seen in my life..

[tharunkumar]

1:23:36 static method inside inner class is valied from java 8 onwards. Beginners plz cross check this point.

[Jasleen-jkqo]

Till JDK 7, Local inner class can access only final local variable of the enclosing block. However From JDK 8, it is possible to access the non-final local variable of enclosing block in local inner class.

[vishalvikram]

To all viewrs of 2020 There is an error at 1.02 with respect to jdk version.
Sir is explaining the concept with less then 1.8 verson that's why it will give error .But if u try to compile it in version greater then 8 it will compile. Successfully.

[rokib_ru_cse]

world best teacher is durga sir.. love from bangladesh .

[ranveervaghela]

Again completed watching on sept 02, 2024 at 10.10 PM :)

[aamirali]

1:05:00 program of calling local variable in Inner class I didnt got any error. Code worked fine without using final keyword.

[eadunuripranay]

Hi durga sir,


Regarding Method local inner classes:

from 1.8V, we can access the local variable of the method in which inner class has been declared from the inner class. So the concept explained at 1:14:00 was brilliant but how come itz working from 1.8V may i know based on what functionality the local variable is being accepted?

[AbdullahAlMamun-fhgs]

Java means Durga Sir. Love you a lot sir <3.

[Dhiraj-ndvy]

In earlier versions of Java, within a non-static nested (inner) class, you couldn't declare static members, methods, or fields directly. However, since Java 8, static methods and fields are allowed within a nested (inner) class if they are declared with the static keyword.

[v.r.]

@DurgaSoftwareSolutions Time.Seek( 1:12:30 )
1.) Reference of inner class also gone when instance method(m1) gone from stack.
2.) when we call m2 method from m1 then m1 is also on stack as well as m2 is on stack, then is it possible to access m1 method variable inside m2 method (when can we access local variables of one method from other method, if both methods are available on stack) ??

[phgraviyt]

Very nice explanation but after java 1 . 8 version onwards we are not required to declare local variable as final to access them inside the inner class Or inner class method
Just keep them effectively final nothing else u can take final also no problem but it's not required
Just keep in mind don't modify that variable inside the inner class otherwise u will get compile time error
Saying : local variables referenced from an inner class must be final or effectively final

[its_asm]

Hello Sir,
I just tried 20 - 30 times my code not giving any error for your assertion @1:7:10(can't access local var(x) of method inside method local inner class)...please explain why.

[pratikshachauhan]

Sir as we can not access local inner class outside that method so how we can access method m2 of local inner class after completions of method m1 by local inner class object.

[Lasaacademy]

Compiler will give left on right
Very decently😀😀

[gaganyadav]

at 1:22:00 we can access instance method using class reference or object reference from static area, right ? so why can't we access i variable from inner class using object reference ?