Question

Consider the following class declarations.

public class Dog
{
private String name;
public Dog()
{
name = "NoName";
}
}
public class Poodle extends Dog
{
private String size;
public Poodle(String s)
{

size = s;
}
}

The following statement appears in a method in another class.
Poodle myDog = new Poodle("toy");
Which of the following best describes the result of executing the statement?

a. The Poodle variable myDog is instantiated as a Poodle. The instance variable size is initialized to "toy". The instance variable name is not assiged a value.
b. The Poodle variable myDog is instantiated as a Poodle. The instance variable size is initialized to "toy". An implicit call to the no-argument Dog constructor is made, initializing the instance variable name to "NoName".
c. The Poodle variable myDog is instantiated as a Poodle. The instance variable size is initialized to "toy". An implicit call to the no-argument Dog constructor is made, initializing the instance variable name to "toy".
d. A runtime error occurs because super is not used to call the no-argument Dog constructor.
e. A runtime error occurs because there is no one-argument Dog constructor.

Answer 1

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Answer 2

The poodle variable myDog is intentioned as a Poodle. The instance variable size is initialized to “toy”. The instance variable name is not assigned a value.