Difference between local and global variables with examples in Java - Core Java -Part -8

JavaBasics Part 8 - Difference between local and global variables with examples in Java

Learn:

local variable java
instance variable vs local variable
instance variable in java
java variable declaration
scope of variables in java
static variables in java
difference between local and global variables with examples
class variable

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[RahulJha-bucv]

Just want to add few points after watching this video and did some practice. Let me know if any point is wrong I will appreciate.
Since main() method is static so we need to create object to access global variable inside main().
If we try accessing global variable inside sum() method which is non static, we don't need object, can directly access.
Same way we can call non static function inside non static function without using object but since main() is static function so if we want to call non static function(normal function) inside main() we have to call using object of class.
Also we can't access local variable of any function directly inside main() method using object. We can call only call function inside main() using object(not its variable) or global variable.


Naveen your tutorials are awesome. I have just started following your videos and every day my concept is getting better and better. I don't have words to show my gratitude.. Thank you very much.

[utpalsarker]

Very simple concept, but you explain in much simpler way, which we understand very easily. Thank you so much Naveen!!!

[charanjitsingh]

it was good session as always but Naveen i have question how to access variables such as i and j that you defined for method 'sum' in this example, which are outside the scope of main method?

[priyankasuryawanshi]

thank you so much i had so many confusions which are not at all in my mind now i must say you are doing great job

[devjewel]

Great work for all of us! thank you...

[jayanbhadiyadra]

Can you please make a video on Class Variable too

[rajeshjangid]

U shld also come up with casting and generics topics

[alim]

Hi Naveen, your videos are very good and informative, can you make video for all permutation for particular string which was asked in many mnc.

[daisyd]

Watching the second time, , cuz sometimes lose driver between pages
and pages between classes😁

[nileshwairagade]

Thanks for training videos.... They are awesome....Had a query in this video:
"In the diagram at the end why have you shown function in the object circle....Can it not be outside object circle in Java memory rectangle? "

[madhurivepareddy]

Very understandable for freshers....tqqq sir

[MyhappyWorld-gg]

Ur videos are excellent.. thank u so much Naveen

[crazypro]

how can we access Global variables in the sum() method
can we use direct system.out.println(obj.name)
or we need to create object in sum() method as well to access name and age variables
Please confirm.

[arunx]

Can we say that global variable is also known as instance variable? If not what is the difference between global and instance variable?

[abhiranjansingh]

Sir If one get membership what benefits he can get ??

[alim]

In Java don't say global variables, they are instance variables.

[shailendrakumaromkar]

Hi Naveen,

One doubt, in sum() method, I was able to directly access & print global variable - name, age.
Question: Why in non-static method (sum() ) we can directly access global variable without creating object, any reason ?

Thanks

[amitpuranik]

inside public void sum method i tried to System.out.println(j); to print only value of i but its not printing any specific reason?

[RajuDas-zngx]

Naveen, I am trying print System.out.print(j) but it does not print anything. Can you please help on this?

[archanatiwari]

Hi Naveen,
I had this one doubt,
is class variables, global variables and instance variable, all are same or there is some difference, because as far as i see I don't find any difference.
Please clarify
thank you
Archana