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Now we're ready to build the dealership application.

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In this section, you learn to control how your code runs using false statements and switch statements.

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The AFL statement uses conditions that return either true or false.

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And the Switch statement compares a value to a list of cases.

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Now, the apps we built so far in this section are static in the sense that they use predefined values.

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If you want to take your application from static to dynamic values, need to come from the user, like

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what you're seeing here.

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And so the goal of the next three lessons is to build an interactive dealership application.

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This application is going to test everything that you learned so far, so let's get started.

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First thing I'll need you to do is create a new class by yourself inside the Section three folder.

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Create a new file named Dealership de Java and make sure the class has a main method.

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Let's do some review.

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What is the scanner?

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Scanner waits for the user to enter a value in the terminal for this app, we need to ask the user some

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questions.

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Then Skinner needs to wait for the user to enter some text.

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We do that with scanned next line, and then the user must go to the terminal type text and press enter.

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Once the user presses enter scan, the next line picks up the text and stores it in the variable.

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We need to import Skinner in order to use it.

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We'll start by making a new instance of scanner scanner scan.

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Is equal to new scanner that can receive input from the system system.

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And now this line of code should come with an error because remember, we have to import scanner before

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we can use it.

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And what's really convenient is that Visual Studio code as a cool auto import feature, let's assume

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you want to use scanner, but you don't know where to import it from and you're too lazy to look it

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up.

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Well, just write scanner.

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Wait for the scanner option to show up.

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Click on it and VSCO knows to import it for you.

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That's pretty cool.

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If you're too lazy to look up or to import something from, then this feature has you covered.

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All right, it's time to build the app at the Java dealership, clients can buy a car or Selwyn first,

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your app should give the client a warm welcome.

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So we're going to print.

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Welcome to the Java dealership.

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Then it should give the user the option to buy a car or sell one.

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So first, I'm going to print.

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Select option to buy a car.

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Followed by another print where we say.

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Select Option B to sell a car.

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Let's run our code.

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And we're off to a very good start.

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The next thing we need to do is use scanner to get values from the user.

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Remember that scan the next line waits for the user to enter a string.

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Here, your application presents the user with a bunch of options, and we need the right string option

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is equal to scan.

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Next line, which is going to wait for the user to enter a string value.

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Let's rerun our code.

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And everything works as we expect.

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Stand up next line waits for the user to enter their next string.

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And the user went to the terminal and typed an option.

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Now, before we use this value and move forward, you might have this burning question inside you that

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I want to address.

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Why didn't we use car?

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Well, next line reads the input as a string value.

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If you hover over the next line method, it says that it returns a string.

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So no matter what the user writes, it will be interpreted as a string.

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And you cannot store a string inside of a car variable.

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There are ways to work around the situation, but it's honestly not worth the headache.

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The input comes in as a string, so let's just treat it as such.

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Now we can use which to compare the user's option against the list of options.

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There are only two options A and B, so we're going to make a switch statement.

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And it's going to compare the option.

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Against Case A.

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In case B.

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And as always, we're going to add the usual default case.

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Based on what the user chooses, we're going to print.

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You chose option and will close the string and connect the option that they chose.

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And if the user chooses something else, we're going to print.

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Invalid option.

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If you happen to be yelling at your screen and you forgot the brake keywords, then you're learning

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fast.

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In any case, when there's a case match switch runs every case that follows.

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So don't forget that the break you were at at the end of each case.

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Rerunning our code.

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That looks a lot better.

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Switch compares your value against each case.

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It matches Case A Java runs case A and then it sees the break key keyword, which ends up breaking the

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sweat statements.

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Always remember to add the break you were at the end of each case.

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Once you're done with scanner, you need to close it if you want to avoid a memory leak.

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So we're going to close the scanner with scan dark cloak.

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It's good practice.

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And now we're all done.

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In this lesson, you started building the dealership application in the next one, we're going to add

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some logic for Case A buying a car.