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You can type a simple class name in here, but if you want to create a new class in a particular package, you can type the whole package path separated by dots, followed by the class name. To create a new class, select the blue src folder and press Cmd+ N on macOS, or Alt+ Insert on Windows/Linux.They are useful for organising large applications that might have hundreds of classes. Application packages are used to group together classes that belong to the same category or provide similar functionality. Next, you're going to create the package and the class. You can also toggle the display of this tool window with Cmd+ 1 on macOS, or Alt+ 1 on Windows/Linux. Of course, you can use the mouse to navigate the Project window, but you can also use the arrow keys. The project window shows all the directories and the files that make up our projects. We recommend putting IntelliJ IDEA into full screen to give you the maximum amount of space for your new Hello World project.
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