Q 13

Which of the following is the syntax to invoke the parent's constructor?

	this.ConstructorName(...);
	none of these is correct

	ConstructorName(...);
	new ConstructorName(...);

	super.ConstructorName(...);
	this(...);

super(...);

Q 14

In a child class constructor, if you do not explicitly call a parent constructor, then no parent constructor is ever called.

	True
	False

Q 15

When you overload a method, the type, order, and number of parameters must exactly match the original method.

	True
	False

Q 16

When you override a method, the type, order, and number of parameters must exactly match the original method.

	True
	False

Q 17

The equals method inherited from Object determines:

	whether two variable references have the same values for their instance data variables.
	whether two variable references have the same type.

	whether two variable references refer to the same memory location (meaning they are aliases).
	none of these is correct

Q 18

Declaring a method final means that

	it cannot be accessed from outside its class.
	it cannot be accessed through an invoking object.

	it cannot be overridden.
	it cannot be overloaded.

Q 19

Consider the classes below, declared in the same package.

public class A { private int a; public A() { a = 7; } } public class B extends A { private int b; public B() { b = 8; } }

Select whether each of the following is true or false.

A variable of type B can be treated as a reference of type A. (B is an A.)

[ Choose ]truefalse

A reference of type A can be treated as a reference of type B. (A is a B.)

[ Choose ]truefalse

a is an instance variable

[ Choose ]truefalse

b is an instance variable.

[ Choose ]truefalse

A variable of type A has two int characteristics as its instance data.

[ Choose ]truefalse

A variable of type B has two int characteristics as its instance data.

[ Choose ]truefalse

After the constructor for class B executes, the variable a will have the value 7.

[ Choose ]truefalse

After the constructor for class B executes, b will have the value 8.

[ Choose ]truefalse