單項(xiàng)選擇題

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.

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多項(xiàng)選擇題

Which two statements are true？（）

A. An inner class may be declared as static.
B. An anonymous inner class can be declared as public.
C. An anonymous inner class can be declared as private.
D. An anonymous inner class can extend an abstract class.
E. An anonymous inner class can be declared as protected.

多項(xiàng)選擇題

AnInterface is an interface.
AnAdapter0 is a non-abstract， non-final class with a zero argument constructor.
AnAdapter1 is a non-abstract， non-final class without a zero argument constructor， but with a constructor that takes one int argument.
Which two construct an anonymous inner class？（）

A. AnAdapter1 aa=new AnAdapter1（）{}
B.AnAdapter0 aa=new AnAdapter0（）{}
C. AnAdapter0 aa=new AnAdapter0（5）{}
D. AnAdapter1 aa=new AnAdapter1（5）{}
E.AnInterface a1=new AnInterface（5）{}

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？（）

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Which two statements are true？（）

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？（）

Which two statements are true？（）