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In this video, I'll introduce the Spring Framework and the animated GIF library we'll be developing, called Giflib.
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>> Hi there.
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My name is Chris and
I'm a Java teacher here at Treehouse.
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Chances are that you've
spent some time online.
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In fact,
I know you've spent some time online,
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since you're here taking this course now.
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Even more, I know that you probably spend
quite a bit of time on the internet,
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given that you're learning path and
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java, has probably taught you a few
things before landing in this course.
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You've probably poked around on many
websites, whether that is the Treehouse
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library, our forum, stack overflow,
or the oracle java docs.
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Or maybe it's during breaks from your
learning that you spend the most
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time online.
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Twitter, Facebook,
Instagram, Reddit, Buzzfeed.
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While you're learning how to use Java
to create programs to do sophisticated
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things, do you ever look at
the very sites you're browsing and
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think, could I use Java to
make a web application?
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Fortunately for you, the answer is yes.
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There are numerous ways to do this, and
it's changed a lot throughout the years.
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In this course,
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we'll focus on using the Spring framework
to help us accomplish this task.
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We'll dive more deeply into
the details of Spring, but
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let me give you an overview here.
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Writing a web application is like being
the author of an ongoing dialogue.
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As with any dialogue you might
wonder who are the speakers?
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For a basic web app,
essentially there are two.
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The server, and the client.
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In general the user of a web application
communicates with the server
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through a web browser.
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This could be Chrome, Safari, Firefox,
Microsoft Edge, or maybe a mobile browser.
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The web browser formats all
user actions and sends them,
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in a nicely formatted request,
to the web server.
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Upon receiving this request, the web
server, according to how it's programmed,
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crafts a nicely formatted response
to send back to the browser.
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The format of the request and
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the response follows a very specific
set of rules as defined by HTTP.
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Or, the HyperText Transfer Protocol.
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It is in the crafting of
the response from a web server
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where your Java code would come into play.
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If you're a Java developer
working on a web application,
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likely most of your development time
is spent here, on the web server.
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You'd be writing the Java code necessary
to respond to the requests coming from
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your users' web browsers.
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Coding a Java web app,
means coding a bunch of components.
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By component I simply mean a class or
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collection of classes that handles
a specific task in the application.
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In a web application, your Java code needs
a component to intercept the incoming
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request, components to handle
the requests to certain locations, and
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more components to fetch and store any
data related to the requester response.
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And even more components to generate
the response back to the web browser.
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Now that's quite a few components.
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Luckily, there are many libraries or
frameworks that help you organize and
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manage this request and response cycle.
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One of the most popular for
Java is the spring framework.
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In this course we'll use the web
components of the Spring framework
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to write a site that serves
as an animated GIF library.
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We'll call this library GifLib.
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This will be a website that lists a bunch
of animated GIFs each with a name,
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user and date uploaded.
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Because the Spring framework provides
some really sophisticated options for
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writing web applications,
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we'll take our time in fully understanding
the setup of even a simple web app.
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This will give you a solid foundation from
which you can climb to more powerful,
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industry ready apps.
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So, when you're ready to start,
head to the next video where we'll begin
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installing what you'll need on your
computer to code your first spring app.
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