Access Specifiers

[arc535]

This is a question I was asked in an interview: I have class A with private members and Class B extends A. I know private members of a class cannot be accessed, but the question is: I need to access private members of class A from class B, rather than create variables with the same value in class B.

I hope I am clear with this question. Thanks.

[JosAH]

You just wrote it yourself: private members can't be accessed from another class, not even a sub-class. Your best bet is to supply a couple of (non-private) getXXX() methods in the first class.

kind regards,

Jos

[arc535]

I am not clear with u r answer. can u write a small prgm for me to understand more clearly.......with getXXX() methods.

[JosAH]

Suppose you have a private member variable myInt; add the following method to your class:

public int getMyInt() { return myInt; }

kind regards,

Jos

[chipp]

just try to explain what josah's mean:

for example:

class A {
	int age;
	char something;

public:
	void get_both() {
		System.out.println (this.age + " years, and " + this.something);
	}
};

class B {
public:
	//if you want to call the members of "an_a_variable"
	void call_get_both(A an_a_variable) {
		an_a_variable.get_both();
	}
};

it's C++ actually... CMIIW anyway...

edit:
i didn't read this line

I need to access private members of class A from class B, rather than create variables with the same value in class B.

[Tolls]

I was going to ask, why post C++ as an example...:)

[chipp]

haven't know java a lot...

[Tolls]

Ah, right.
Just it might confuse someone new to the language posting stuff from a different one.
You're right in that the concept is the same (well, if that was a getter rather than a printer), though.

[mkarthik90]

You might use getter to access these variables.
You cant access the private variables but still you can create a method in the CLASS A which uses the private variables.

And this method can be accessed from the CLASS B.

[JosAH]

What is wrong with my first reply? Was it written in invisible ink again?

kind regards,

Jos

[DarrylBurke]

You might use getter to access these variables.
You cant access the private variables but still you can create a method in the CLASS A which uses the private variables.

And this method can be accessed from the CLASS B.

That exactly what Jos said at #4, so why repeat it?

db

[DarrylBurke]

What is wrong with my first reply? Was it written in invisible ink again?

kind regards,

Jos

No, I could read it ... albeit a minute later than you could ;)

db

[arc535]

Thanks JosAH...i got it by using getter and setter methods.....