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# Doubt on Mocktest

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public class Mycircle {

public double diameter;

}

}

}

Which statement is true?

A. The Mycircle class is fully encapsulated.

B. The diameter of a given MyCircle is guaranteed to be twice its radius.

C. Lines 6 and 7 should be in a synchronized block to ensure encapsulation.

D. The radius of a MyCircle object can be set without affecting its diameter.

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A. The Mycircle class is fully encapsulated.

B. The diameter of a given MyCircle is guaranteed to be twice its radius.

C. Lines 6 and 7 should be in a synchronized block to ensure encapsulation.

D. The radius of a MyCircle object can be set without affecting its diameter.

Option A is wrong because instance variables radius and diameter must be private not public for encapsulation.

Option B is wrong because there is public diameter variable can be set independently e.g diameter = 34;.

Option C is wrong because synchronization is nothing to do with encapsulation.

Option D is correct the reason public radius variable can be set radius = 3;
[ August 22, 2007: Message edited by: Ameen khan ]

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