FAQ: Access, Encapsulation, and Scope - The public Keyword

This community-built FAQ covers the “The public Keyword” exercise from the lesson “Access, Encapsulation, and Scope”.

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Here, it seems the second hint is referring to an older version of the exercise…

When it is said:

Finally, Bank‘s main() method is trying to call its own .getInfo() method. 
This method tries to print the private .address instance variable 
of all of its CheckingAccounts.

I find this very suspicious since the .getInfo() method is in CheckingAccount.java, like all other methods. Also, there is no .address instance anywhere…

To me, the solution is very simple: just like the .addFunds() method, the .getInfo() method was also set to private. That’s it.

I assume they mean creating an instance of DogSchool, not another DogSchool class.

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In the CheckingAccount class, the instance variable balance is listed as private and it is also referenced in CheckingAccount’s getInfo() method. I understand the way to prevent the original errors in the exercise is to change name, addFunds(), and getInfo() from private to public, but I’m not understanding how bankOfGods.accountOne.getInfo() runs successfully when balance is still listed as a private variable and it’s being referenced in getInfo().

When making a method public, does it automatically make the variables referenced within the method public too?

A public method can reference private methods that are in the same class, I think.


I believe you’re right. Oracle helps explain it in a great way:

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