Question

How many objects are created?

Dog labrador =new Dog();
Dog poodle;
Dog beagle = new Dog();
poodle beagle;
a)2
b)4
c)1
d)0
e)3

Answer 1

In the given code, 4 objects of the Dog class are created: labrador, beagle, poodle, and an object that is attempted to be assigned to poodle.

Step-by-step explanation:

In the given code, objects are created for the Dog class. Let's analyze the code step by step:

1. Dog labrador = new Dog(); - This line creates an object named labrador of type Dog.
2. Dog poodle; - This line declares a variable named poodle of type Dog, but it doesn't create an object.
3. Dog beagle = new Dog(); - This line creates an object named beagle of type Dog.
4. poodle beagle; - This line is invalid and will result in a compilation error. It seems like an attempt to assign the beagle object to the poodle variable, but the correct syntax would be poodle = beagle; to assign the object reference.

The code provided demonstrates object creation in Java. For the statement Dog labrador = new Dog();, one object is created. The statement Dog poodle; simply declares a reference variable and does not create an object. Then another object is created with Dog beagle = new Dog();.

However, the statement poodle beagle; is an invalid statement in Java and does not create an object; it should likely be poodle = beagle;, which would not create a new object but rather assign the reference of the 'beagle' object to the 'poodle' reference variable. Therefore, only 2 objects are created.

So, the correct answer is (b) 4 objects are created.