The IntelliJ IDEA editor supports all of the standard features, such as file tabs, bookmarks, and syntax highlighting. The main parts of the editor workspace are the editor itself, tabs, gutter area, status bar, and scroll bar.
The gutter area is placed vertically on the left-hand side of the editor. It presents additional information about the code you are working on. The gutter is very powerful and an interactive tool. You can click on an element in the gutter to execute the action at any time. You can also hover your mouse over a symbol to see additional information or a hint.
In the gutter area, you will find various icons that identify the code structure. When you are editing the Java class or interface, for example, the gutter will show the overrides or is overridden by icons. Clicking on these icons will list the related, appropriate files, allowing you to open them in the editor instantly. If you work with the specific framework and...