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We’re off to a good start! We created a Java class, but it currently does not do anything; we need to describe the behavior of the class for it to be useful.
Let’s start by creating the starting state of our class. We can do this by adding a class constructor to it.
- A class constructor will allow us to create
Dog
instances. With a class constructor, we can set some information about theDog
. - If we do not create a class constructor, Java provides one that does not allow you to set initial information.
The code below demonstrates how a class constructor is created:
class Car { //The class constructor for the Car class public Car() { } }
In the example above, we created a class constructor for the Car
class. This constructor will be used when we create Car
instances later. The public
keyword will be explained later in this course.
Instructions
1.
Add a class constructor called Dog
to the class.
Note: If you’re getting an error in the console about a main
method, include the following code within the Dog
class (it will be explained later in this lesson):
public static void main(String[] args) { }
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