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We've just created our
first project using an IDE.

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Now let's dive in and see how much better
programming can be with the right tools.

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But first, we've got the tip of the day.

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You can turn this off by
unchecking this box, but for

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now, let's leave them on and
just hit close.

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Here we are in IntelliJ IDEA.

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On the left is the Project pane, and
on the right is where we write our code.

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Let's start with the Project pane.

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This area shows us all the files
that make up our project.

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If we drill into MyFirstProject,

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we can see that our project is
made up of on .idea folder,

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an src folder, and
on MyFirstProject.iml file.

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The .idea folder and
the MyFirstProject.iml file are just

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setting for IntelliJ,
leaving us with just the src folder.

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Which stands for source and
is where we keep our source code.

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Inside this folder, we have two more
folders, com and teamtreehouse.

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But since the only thing in the com
folder is the teamtreehouse folder,

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it gets shortened to
just com.teamtreehouse.

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And inside the treehouse folder,
We finally have our main.java file.

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Though, since most of our
files will be Java files,

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it doesn't show the .java
part in the Project pane.

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To help remember all of that, let's look
at it one more time in the File Explorer.

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Let's right click on the top
level my first project folder and

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pick the option to open
it in the File Explorer.

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For me, it's Reveal in Finder, and
here we can see all our project files.

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Though the .idea folder is hidden by
default since it starts with a period.

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Digging in to our source folder, we can
see that we do indeed have a com folder,

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a teamtreehouse folder and
a Main.java file, awesome.

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Now that we know what files
make up our project and

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where those files are stored, let's
get back to IntelliJ and start coding.

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On the right side of the screen,
let's delete the comment,

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and then try printing the words,
java is awesome,

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using the print line
function from System.out.

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Let's delete the comment, and then start
typing the word System with a capital S.

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And notice that it's trying
to guess what you're typing,

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this is called code completion and
it is awesome.

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You can use the arrow keys to move up and
down this list.

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All you need to do is hit
Enter on the right one.

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So once you've got System highlighted,
hit Enter to select it.

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Then type a dot and an o and select out.

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And for print line, add another dot,

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and then you can either type it out or
just type pl.

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That's right, if you've got something
that's more than one word, you can just

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type the first letter of each word,
and IntelliJ will figure out the rest.

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So let's hit Enter, and
it even adds the semicolon.

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All we need to do is add
our message as an argument.

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So let's type, Java is awesome,
end quotes and

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then to run the program,
click the Play button up here.

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And at the bottom we'll see our message,
Java is awesome.

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This section at the bottom
is the Run window.

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It's where we'll see any
output of our program.

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You can hide and
show the Run window by clicking this

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button down here, or
hitting Cmd or Ctrl+4,

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You can also hit Cmd or
Ctrl+1 to hide the Project pane.

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Also you can toggle having all
these buttons around the outside,

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by clicking right here.

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So if for some reason you're
missing the project button,

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just click down here to get it back, nice.

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In the next video, we'll get more
comfortable with IntelliJ by

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adding a class and
learning about packages.