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All right, we got our IDE installed and
we're ready to start our first project.

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Projects can be thought of as what we
were exploring each time we created a new

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work space.

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So for instance we would have started a
new project for our Pez dispenser, one for

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our hangman game or one for
our karaoke machine and

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what ever else we end up
creating in the future.

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So let's dive in and explore how to
create projects in your new environment.

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All right, so if it's not started up
already, go ahead and start up IntelliJ.

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Then we'll click this Create New Project.

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Here you'll see it's asking for
a Project SDK.

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Now SDK remember stands for
software development kit.

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So let's choose the JDK we installed.

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Oh, it's not here, that's just common
the first time you start up IntelliJ,

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the very first time.

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After we do this we won't
need to do it again.

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So, I'm gonna click new over here and

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you'll see there's different types
of SDK's that are available, and

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the one that we want is the JDK,
or the java development kit.

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I'm gonna click that and of course this
is gonna look different if you're on

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a different OS It's gonna try
to guess where it's at and

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this on a Mac here will show what
the directory structure looks like.

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So here we go, yeah this looks right
it's in the library it's the JAVA.

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The one that I installed was JDK1.8.

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You might have installed a later version,
okay, great.

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So I'm gonna go head and
I'm just gonna click choose.

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Because it was correct, and
there, sure enough there it is.

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So now we have this project SDK here,
cool.

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So let's click next.

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All right, so
in this oddly laid out window here,

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it's asking us if we wanna create
a new project from a template.

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Now templates help by
creating common code for us.

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For instance, the one template that
we have available here is called

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the command line application.

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Also known as the console applications
that we've been building.

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So, what this will do is it will write
the boilerplate Java main method, and

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let's go ahead and do that.

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Let's choose that.

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So, I'm gonna click this, and it
automatically chose that, and it says down

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here, Simple Java application that
includes a class with the main method.

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That's exactly what we want.

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Great, so, let's choose that.

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We'll click Next.

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Okay, so let's name our project.

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For this first one let's just recreate
that systemizer class that we wrote in

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the work space earlier.

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So, the name of this project
would be Systemizer, cool.

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And see how it normally, it started
going ahead and typing along and

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naming the folder the same as the project.

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That'll help us find it later so
very similar on a Mac,

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this is my home directory, and then
there's a folder called IdeaProjects.

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And whatever I named
that is what it put here.

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I could make this different, but that's
what I wanna have, I'm gonna leave it.

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And the base package, remember this
is packages like we have been doing.

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So, you take your URL and flip it around.

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So we're com.teamtreehouse,
if you have a website and

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you feel like putting it in there,
feel free to do so.

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I'm gonna go ahead and click Finish and
that's gonna build everything out for us.

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Okay, so these tips here, these are pretty
awesome, but they're a little overwhelming

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and in your face, especially when
you're just getting started.

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So what I'm gonna do is I'm gonna leave
this check box, Show Tips on Startup,

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checked, but
I'm gonna go ahead and close them.

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This is a great place to go,
and you can click Next Tip and

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Previous Tip and kinda walk through and
learn things about your IDE here.

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So I'm gonna go ahead and
close it for now though.

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So before we get started I just wanted
to let you know that I have a plugin

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installed that will show key
commands as I'm using them,

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like keyboard shortcuts that I'm doing.

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And it will show both Mac and Windows.

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Now, the keyboards on Mac and
Windows machines,

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if you don't know,
are a little bit different and

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therefore the hotkeys that you do to
do things are a little bit different.

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I just thought it'd be nice to show
on the screen what's going on.

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You will not see those on your
screen don't worry about that.

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So this area here is called the editor and
it's where we're going to do editing and

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it works much like that editor
we were using in workspace, but

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it is infinitely more powerful.

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Now since Java's a strongly type language,
it knows things about what we're trying to

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do, through a process
called code inspection.

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Here, check this out.

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I'm gonna start typing, and it's going to
take a stab about what I'm talking about.

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This is called code completion.

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So, I'm gonna type S, and look at that.

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It popped up a list of what I
could probably be talking about.

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So, I'm going to use the arrow keys and
I'm going to choose System,

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because what I want to do here is I'm
going to write out to the screen.

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Let's do System.out.println.

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So, I'm gonna choose System, I moved using
the arrow keys and I'm gonna press dot.

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And there it chose that and because
it knows what type of class this is,

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it knows what the public fields are and
it also knows what all the methods are.

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So you can see all the methods
that are available here.

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So I'm gonna go ahead and choose out and
again I'm gonna press dot.

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And because it knows what type out it is
it knows the different things that it

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can do so, if we stroll down here we can
see that it has print, I can start typing

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as well and it will go down on the list of
what's available and I wanna do println.

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So that's great let's go ahead and
backup a bit I just want

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to show you what would happen if we move
away so I'm gonna click my mouse away.

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Now you'll see that it
highlighted in red and

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see that little red squiggly line here?

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Let's mouse over that and it says,
that it can not resolve symbol 'pr'.

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And that also there's another error,
that it expected a semi colon.

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Handy, right?

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So I'm gonna to go back and
put my cursor right here and

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if I wanted to get the code completion to
kick off again, I can press control space.

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Give that a second.

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The first time that this kicks
off it has to index everything.

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So just give this one second and
it'll be quicker in a bit.

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Again so we can choose println and
we'll say hello from our IDE.

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Cool so I'm gonna go ahead and
save and I did that with Apple S and

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because that's such
a common thing to do right.

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If you're going to always be logging out
to the screen, there's a shortcut to it.

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So if you type out S-O-U-T and actually
see there's some other ones on here.

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But we're going to to S-O-U-T and
I'm going to press the tab key and

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there's the System.out.println.

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There, lots of savings there.

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Okay so let's just go ahead and run this.

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Now remember what we had to do in the past
was compile with the Java C program and

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then run the program
with the Java command.

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Well guess what,
this IDE knows how to do that.

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To run this code let's go to the Run menu,
it's up here Run and chose run main.

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Note next to this instruction here
there's a little keyboard shortcut here.

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So it's saying on a Mac if
I do Ctrl + R it will run.

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Now because we created this project
using the command line template

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everything was already all set up for
us to just run this.

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We'll see later how to
configure things this way but

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because the template was using main it
automatically knows what that is so

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let's go ahead and let's run this.

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Okay so now things are being compiled and

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it ran and here in this area
down here is our console.

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If you mouse over you can see
the program that was actually run and

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you can see here that it says JAVA and

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then a bunch of parameters dropped
we'll explore that a little bit later.

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So, you can see how the program ran.

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I clicked in and I'm just going to
move my mouse, move my cursor over and

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we could see that I called all
of these different properties.

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Wow, right, and there it's at the class
path that was in the dash CP we did

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before, so it got the class path also,
so I just wanted to show you that and

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that's how it's running it off.

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And here's our messages,
hello from our IDE and saving space.

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Those are just the two
things that I wrote there.

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Okay, so, let's go ahead,
I'm going to remove these two lines and

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save again.

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Okay, so let's go grab the code
that we wrote in workspace and

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just plop in in here.

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It's in the teacher's notes below.

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So, I came over to my workspace and
I copied and I'm gonna come in here and

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I'm just gonna paste.

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All right, so
let's move the cursor over here where

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it's highlighted in red,
this thing set here.

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Let's see what it says.

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It's saying that it doesn't
know what a set is, and

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I remember we didn't import that.

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So that's why it's saying that.

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So let's go ahead, I'm gonna press, and

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that key command there is Alt + Enter on a
Mac that's what it's suggesting that I do.

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So I'm gonna go ahead,
I'm gonna press that, okay.

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And here is the action that it's
suggesting is to import the class, so

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let's go ahead and do that, cool.

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And then it's doing it again for
the TreeSet, so I'm gonna do that again.

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I'm gonna press Alt+Enter, and
it imported and if we scroll up,

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you'll see that it did the imports for
us, pretty cool, right?

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Huh, it looks like there's
still a problem so,

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look here I haven't let's mouse over here.

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It says class or interface on this one.

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I think I have an extra brace so if I move
my cursor, see how it highlights this ones

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highlighted and
that ones highlighted up there.

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And then if I go to this one
that's closing the main class

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then this is closing nothing.

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So I have an extra brace, so
I'm gonna go ahead and get rid of that,

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and now everything is happy.

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There we go, so I'm gonna save that.

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All right, so let's run that again.

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So again, that was Ctrl+R or
Shift+F10 on Windows and Linux.

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Cool, awesome, here it is.

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It's a whole of different things.

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Okay so now one more thing that I
wanted to show you really quick.

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Let's say that we were looking at this
code that we wrote just a while ago, but

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let's say that we forgot
what some of this was.

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So, if I wanted to highlight over this,
and

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I wanted to see what this said,
I could just press F1 for help.

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So here it is about the getProperties and

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it says that it returns the
java.util.Properties and I can click that.

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And I can navigate just like we
did to the documentation, but

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here it is, right in our code.

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Wow, right?

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What a powerful set of tools all ready,
and there are so

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many more packed in there.

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I think a handy way to view
this might be as a tool shed.

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There are lots of powerful tools in
the tool shed that assist you in making

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tons of cool things.

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But they aren't used all the time.

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I mean you don't use the jigsaw
every time you build something.

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Sometimes you just need a sander but

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00:10:03,740 --> 00:10:06,280
when you do need that jigsaw
it's good to know it's there.

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And like I mentioned, well, not all tool
sheds have the same tools in them, more or

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less, the same tools are available
in every heavily used tool shed.

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Eventually, every tool
shed owner buys a nail gun

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just to stay competitive with
their neighbors tool shed.

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I'm going to do my best at walking you
through each of these different tools

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in your IDE tool shed.

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But I'm sure we won't touch on all of it.

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Feel free to explore, you'll not only
learn about what the idea is capable of,

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but also some great Java
best practices as well.

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And unlike the tool shed
analogy I just used,

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you don't have to worry about
losing a finger if you mess up.

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The help system at IntelliJ
is really great and

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I wanna show you how to explore around.

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If you find some killer tool that you
just love, share it in the forum.

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This stuff can be super exciting,
and let's not let it overwhelm us.

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Sound good?

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00:10:55,550 --> 00:10:57,500
I wanna show you how to deal
with multiple files and

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importing other projects,
right after this next exercise.