试题详情
- 单项选择题 public class Mycircle { public double radius; public double diameter; public void setRadius(double radius) this.radius = radius; this.diameter= radius * 2; } public double getRadius() { return radius; } 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.
- B
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