# Task

For you, two interfaces have been created: `Human` and `Animal`, as well as one class – `Werewolf`.
Your task is to inherit both interfaces in the `Werewolf` class and then **implement their methods**. In the `Werewolf` class, the **comments above** indicate how you should **override** these methods. A werewolf is **both a human and an animal**, so it has a method called ``transform()``. You should also use the boolean value `isHumanForm` in the methods as instructed.
If the task seems difficult, feel free to use the **Hint** and **Solution** buttons to analyze the solution!




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  <li>
    You have <b>interfaces</b> and a <b>class</b>. Before you start working,
    familiarize yourself with these interfaces and the class.
  </li>
  <li>
    In the <code>Werewolf</code> class, you should implement two interfaces –
    <code>Human</code> and <code>Animal</code>. Do this using the syntax
    implements <code>Human</code>, <code>Animal</code>.
  </li>
  <li>
    Override the methods using the <code>@Override</code> annotation from both
    interfaces.
  </li>
  <li>
    The <code>speak()</code> method should check the boolean value
    <code>isHumanForm</code> and if the answer is <code>true</code>, return "<b
      >I am a human.</b
    >". If the value is <code>false</code>, return "<b
      >I cannot speak in wolf form.</b
    >".
  </li>
  <li>
    The <code>sound()</code> method should check the boolean value
    <code>isHumanForm</code> and if the answer is <code>true</code>, return "<b
      >No sound in human form.</b
    >". If the value is <code>false</code>, return "<b>Howl!</b>".
  </li>
  <li>Click the "<b>Run Tests</b>" button to test your solution!</li>
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@Override
public void speak() {
    if (isHumanForm) {
        return "I am a human.";
    } else {
        return "I cannot speak in wolf form.";
    }
}

@Override
public void sound() {
    if (!isHumanForm) {
        return "Howl!";
    } else {
        return "No sound in human form.";
    }
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Those who know OOP can program well. That's what many programmers say. Get ready for an important part of your Java learning journey, mastering which will greatly boost your programming skills in general. You will learn how to effectively use the Java development environment, the principles of Object-Oriented Programming (OOP), and best practices in OOP. You will learn to make your code flexible and deepen your knowledge of previously covered topics. Let's get started!


Finally, we can start learning Object-Oriented Programming (OOP) in Java. It will be challenging, but I'm confident that you'll succeed! In this section, we'll cover all the principles of OOP, explain why OOP is important. You'll learn how to inherit classes, overload and override methods, encapsulate data from other classes, and work with abstraction. Moreover, you'll reinforce all these theoretical concepts with practical exercises, working on assignments in your IDE. You'll gain a wealth of knowledge, both practical and theoretical, so let's get started!

In the previous section, we concluded that all Object-Oriented Programming is mainly built on abstraction. However, an abstract class has one significant limitation – you can inherit from only one abstract class. But what if we need more?
Interfaces come to the rescue. In this section, you will learn what an interface is, why it's necessary, how to use it correctly, and you will continue practicing Object-Oriented Programming. Let's turn you into a professional!

Java OOP

Challenge: Interface

Task