Quiz

1.	Which of the following are true? Please select all the correct answers.
	A.	If a class declaration does not have an extends clause, then the class is a direct subclass of `Object`.
	B.	If a class is declared as `abstract` then it may not be declared as `final`.
	C.	A top-level class (non-inner class) may be declared as `private`.
	D.	A class may implement, at most, one interface.

2.	Which describes the following class declaration? class Circle extends Shape { Point center; double radius; } Please select the best answer.
	A.	A circle has a shape that is a center point and a radius.
	B.	A shape has a circle that is a center point and a radius.
	C.	A circle is a shape that has a center point and a radius.
	D.	A shape is a circle that has a center point and a radius.

3.	Which of the following are true? Please select all the correct answers.
	A.	A constructor may be declared as `private`.
	B.	The default constructor is inherited from a class's superclass.
	C.	A constructor may throw an exception.
	D.	A constructor has a `void` return type.

4.	What is the output of the following program? class SuperClass { int i, j; SuperClass(int i, int j) { this.i = i; this.j = j; } SuperClass() { this(2, 3); } } public class Question extends SuperClass { public Question() { System.out.println(i + j); } public static void main(String[] args) { new Question(); } } Please select the best answer.
	A.	0
	B.	5
	C.	2
	D.	A compilation error occurs.