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So now that's the basics about inheritance.

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We can also override methods or properties of our base class.

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So let's say in the accounting I want to add my own ad employee method.

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We can do that.

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We can add our own method here and get the name here.

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Let's say now here I want to have a different logic for adding that extra if check where to check if

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name equals Max.

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Well then I want a return and not add Max as an employee because Max is totally unsuited for debt.

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Otherwise if the name is not Max I want to add the employee.

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Now however we also face another issue.

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If I tried to add this to employees we see employees is not a known property.

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The reason for that is that employees is private and that's important.

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Private properties are really only accessible from inside the class in which they're defined not classes

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that inherit from that class.

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So employees is available instead of department but not in classes based on department.

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So accounting department doesn't have direct access to the employees property.

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If we want to grant dead access and still make sure that it's not a property that can be changed from

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outside we can switch it to protect it protected us like private but unlike private it's now not just

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a way lable in this class but also in any class that extends this class.

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So now we can access employees from inside our accounting department here I can now add an employee

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if it's not Max.

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So they are for now if I go down there and on my accounting I want to add an employee often a max this

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should not work if I try to add menu.

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This should work.

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So if we now save dad and we also output print employee information here and then save that we should

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see that indeed we have one employee there which is menu because of my own accounting method logic for

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ad employee Max was not added.

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So the key takeaway here is that you a can override methods of your base class.

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You can add your own implementation and then that implementation is used instead of the base classes

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implementation.

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And B you also have to control access to properties with protected because if you use private you're

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really restricted to this class whereas protected still makes it and accessible from outside but makes

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it accessible from inside of classes that extend the base class.