The program we will be using as part of this class is called Eclipse. This is an IDE – “integrated development environment” – that combines an editor, a compiler, and a bunch of other really useful tools – that make programming easier.

Eclipse is free. To download and install it, click here.

It will download a file that will have a name like eclipse-inst-jre-win64.exe (if you are on a Windows computer). Open it, then select the first option – Eclipse IDE for Java Developers.

Click Install on the page that follows, and accept the license. Default options for the installation are OK.

It might take a while, but eventually it will produce Launch button. At this point the shortcut for Ecplise will also be on your desktop, so you can start it later.

For now, click Launch. It will ask you to provide a directory where you will work. Default is OK. Check “Use this as the default and do not ask again” to not having to answer this question again.

On the window that opens, click Create Hello World application.

On the screen that opens, click “Create a Java project” in the left pane. Put HelloWorld in the project name on the dialog that follows. Then click on Finish.

After that, click on the button in the top row that looks like a green target with plus sign (if you hover the cursor over it, it should say Add Class).

Put HelloWorld in the Name field, check “public static void main(String [] args) right below and click Finish.

The result should look like this:

Right click on module-info.java file (leftmost panel) and click Delete in the menu that opens, then OK on the confirmation dialog box.