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In the first video, we implemented tasks one, two and three, and we loaded all the contacts into

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the contact list except for Geo, because her birthdate isn't valid.

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Now on to the final task for part six, which is to create a function named at manage contacts.

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We're going to be interacting with the user and managing our contacts through this function.

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So I'm going to start by creating a new object of the scanner class.

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This scanner object is going to receive input from the system.

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System in.

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And the Java Dark tells us to create an infinite loop.

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So we'll do just that.

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And we need to ask the user to add or remove a contact or exit.

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I'm just going to copy what we have from the workbook.

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And after asking the user for their response, we're going to pick it up using scanned next line.

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Kano if their response happens to equal a.

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We're going to copy the following from the workbook, which further prompts the user for their name,

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phone number and birthdate.

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Then we're going to pick up every answer using scanned next line.

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And now from the information they provided, we can add a new contacts manager and contacts.

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And we'll create a new contact from the name.

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Number and birth date that they passed in.

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Here, we get an error.

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That's because the contact constructor can throw a pass exception.

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A pass exception is a checked exception.

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So if you want to call this constructor, job is going to force you to try to run the code.

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And if the code happens to fail, you need to catch the pirates exception.

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And we'll just print the message that comes out of it.

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All right.

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And after writing the contact, the article tells us to use a finally blocked print.

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Updated contact.

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Followed by the updated list of contacts.

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That's all for case.

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If it's case B and they want to remove a contact.

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Then we'll just ask them who they'd like to remove.

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Then we can call a manager and remove contact and remove whatever name value the user.

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Paston.

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All right.

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And if the user chooses C or anything else, really just break the loop.

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And after the wire loop, don't forget to close scatter.

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All right, now, back in the main method, we can call manage contacts.

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I see that.

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I've called that managed contact.

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Let me just make sure it's plural.

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Think we're now ready to test each case.

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I'll start by testing, Casey.

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I'll add another contact named Zack.

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With a phone number of 111, two, two, two, three, three, three and with a birth date of 12, 12,

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1995.

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Next thing I'll do is remove a contact.

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I'll remove Zack.

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And woops, forget the print, the updated contact after removing them.

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Let's try it again.

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All that dark again with the same phone number as before.

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Same birth date.

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And get.

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Just like that.

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Zach has gone.

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Finally, I'll just exit.

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And that's all for adding interactivity to the application.

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If you want to visualize what's going on, feel free to add breakpoints and launch the debugger.

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Otherwise.

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I hope you're ready for part seven.

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I'll see you in there.