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A class can inherit properties from another class.

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Every class in Java has a common ancestor, the object class.

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In this lesson, you're going to learn about inheritance.

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The object class is the ancestor of every class.

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Every class inherits methods from the object class.

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Here's the source code for the object class, it's a bit hard to read on the website, so I cleaned

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it up for you.

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So please open the folder for this lesson by navigating that this path and the resources.

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You'll notice inside the object class there's an equals method.

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Remember when I used to say that default equals method compares the references of two variables?

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This is the equals method I've been talking about.

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There's also a two string method.

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A harsh code method and a bunch of other methods.

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Get class, notify, notify all that in overloads, the wait method three times, remember that overloading

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means defining the same method more than once, but with different parameters.

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And I commented these methods for simplicity.

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OK, now what I want you to do is add another folder to your workspace.

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So follow what I'm doing.

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And grab the folder that corresponds to this path in the resources.

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OK, before we continue, I want to repeat that the object class is the common ancestor of every class,

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so every class inherits methods from the object class.

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Inside may create a new object of the person, class, person, person is equal to a new person.

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Zach.

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Who's 27?

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Now, from person noticed that we can automatically access so many methods, we can access an equals

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method, a hash code method, a two string method, wait, notify get class.

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But we didn't define any of these methods in the person class.

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So where did they come from?

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These methods came from the object class, because object is the common ancestor of every class, then

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every class person is going to inherit all of its methods.

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Here is equals.

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Here's to string.

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There is a code.

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Get class, etc. This is inheritance.

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Let's recap, a class can inherit properties from another class.

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The object class is the common ancestor of every class, so every class inherits methods from the object

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class.