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// Public vs private access.

class MyClass {

private int alpha; // private access

public int beta; // public access

int gamma; // default access (essentially public)

/*

Methods to access alpha.

It is OK for a member of a class to access a private member of the smae class.

*/

void setAlpha(int a) {

alpha = a;

}

int getAlpha() {

return alpha;

}

}

class AccessDemo {

public static void main(String args[]) {

MyClass ob = new MyClass();

/*

Access to alpha is allowed only through its accessor methods.

*/

ob.setAlpha(-99);

System.out.println("ob.alpha is " + ob.getAlpha());

// You cannot access alpha like this:

// ob.alpha = 10; // Wrong! alpha is private!

// These are OK because beta and gamma are public.

ob.beta = 88;

ob.gamma = 99;

}

}