Java is an object-oriented programming (OOP) language, which means that we can design classes, objects, and methods that can perform certain actions. These behaviors are important in the constructi...

One fundamental concept of object-oriented programming in Java is the class. A class is a set of instructions that describe how a data structure should behave. Java provides us with its own s...

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 s...

When we create a new class, we probably have specific details that we want the class to include. We save those specific details into instance variables. Here is an instance variable in the [....

Perfect! By adding a class constructor and creating instance variables, we will soon be able to use the [...] class. However, the class constructor [...] is still empty. Let's modify this by ad...

We're almost ready to use our custom [...] class! But first, we need to understand how to structure and run our Java program. You may have noticed a mysterious looking line of code in previous l...

Perfect! Now that we have a [...] method in our class, we're ready to start using the [...] class. To use the [...] class, we must create an instance of the [...] class. An instance of...

Great work! We created a [...] object inside of the [...] method, but...nothing happened. Although we created an object inside of [...] method, we did not print out anything about the [...]...

Great! Now the [...] method is available to use on the [...] object. We can do this by calling the method on [...] . Here is an example of calling a method on an object using the [...] ...

Fantastic! Similar to constructors, you can customize methods to accept parameters. [...] In the example above, we create a [...] method that accepts an [...] parameter called [...] . ...

Let's explore one of the keywords used in declaring a method. In past exercises, when creating new methods, we used the keyword [...] . The [...] keyword indicates that no value should be retur...

You've created a fully functional [...] class. Congratulations! One of the object-oriented programming concepts that allows us to reuse and maintain code more efficiently is called inheritance...

Great work! Let's review everything that we've learned about object-oriented programming in Java so far. - Class: a blueprint for how a data structure should function - Constructor: instructs...