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So now that we know, we saw what happens under
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the hood, and as I said, don't worry about it if
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you don't care about that part. Now we can go back
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to Eclipse, and we can start creating a package. A package
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is basically a way of organizing your classes into a
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hierarchy. In this case, I'm going to specify the package name as
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edu.gatech, which means that I'm creating really two packages, a package
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gatech inside package edu. And I can start creating classes inside
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my packages. So here, I can use the contextual menu, select
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New>Class, and I'll get another wizard that will allow me to
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specify the name of the class. I'm not very creative here,
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so I'm just going to call it Hello World. There's many other parameters
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you can set, and in particular, you can define whether you
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want a main method in your class. Where having a main
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method means that your class can be the main class in
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your project, can be the one that is run when you run
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your project. After we click the button, the Finish button, we,
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we get the class. So we also get template code for the
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class, as you can see here, so we go to the editor
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function, you can see that there is a to do. Where you
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have to put your code, and here we are simply, basically printing,
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you know, the typical first program. We just going to print Hello World
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in Java. And something you can note is that as we are
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typing, Eclipse gives us a auto complete suggestions, which is very helpful.
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For example, in case you don't remember the exact syntax,
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or the method, or you don't remember the parameters of the
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method. Which is, you know, often the case especially where you
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work with large libraries. So having that feature can really, really
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help you. So now if we want to run our code
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we can either click on the button up here, or we
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can right-click in the Call window and select Run As Java
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Application. And if we do that, Eclipse will run our tool,
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and it will create, as you can see here, a console view that basically contains
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the textual output of my program. And as expected, the output is Hello World.
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