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The next step is to add a setter.

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Every field needs a center, the parts field, it's private, yet it doesn't have one.

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This means we have no way of updating it from outside.

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So in this lesson, we're going to add a setter for the parts field.

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We need to add a setter, because right now we have no way of updating the parts array, so inside the

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car class at the very bottom, make sure the center is public.

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Is lower camel case, it's going to start with the word set and end with the field name, it's going

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to accept a parameter string parts.

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And using a raised copy of set the parts field of the current object equal to a copy of the parameter.

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And we're going to copy the full length of its elements.

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All right, now, back in May, instead of spare keys, let's say the second Nissan comes with a spare

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filter, but instead of creating another variable, I'm going to call this setar.

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And I'm going to directly pass in a new string array.

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With two elements.

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Tires and filter.

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By the way, this is the syntax we use to directly pass in an array without having to store it in a

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variable.

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It's also the same syntax that you would use to directly return an array once again without having to

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store it in a variable first.

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I showed you the syntax during the tic tac toe challenge, and it was also in your cheat sheet of module

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one, but in case you missed it, I also included the syntax in the current cheat sheet.

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Anyways, we can run the code.

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And perfect, our getters and setters are working as they should.

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The object calls the center passing in an array, Gever runs set parts, which receives the array as

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a parameter.

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The center sets the parts field equal to a copy of the parts parameter.

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And because this works, we're done updating the big three.

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Every field is protected by the private keyword, and the getters protect each field as well by returning

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a copy of it, and the setters allow us to update each field without having direct access to it.

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In this lesson, you added a setter and finally we're done fixing stuff.

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Every time you add a new field, you need to update the big three, namely the constructors getters

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and setters.

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You started by fixing your constructor and now it updates every field when it runs.

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You added another Geter, and now you can safely access any of the Fifield's.

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And then you added another setar.

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Now you can update any of the Fifield's, there is nothing else to fix.