How can I set up automatic code formatting in Idea?

To automatically format code in IDEA, you can follow these steps for configuration.

1. Open IntelliJ IDEA and select “File” -> “Settings” from the menu bar.
2. In the “Settings” window, go to “Editor” and then select “Code Style”.
3. Select the code style scheme you want to modify under the “Scheme” tab in “Code Style”, such as “Default”.
4. In the “Preview” window on the right, you can see a preview of the current code style.
5. Expand the “Java” option in the tree structure on the left to access settings related to Java code.
6. Modify different code styling settings according to individual needs, such as “Tabs and Indents”, “Wrapping and Braces”, and so on.
7. In the “Preview” pane on the right, you can instantly see the updated code styling effects.
8. Click the “Apply” button to apply the modified code styles to the current project.

This allows you to quickly format selected code blocks or entire files by using the shortcut Ctrl + Alt + L (Windows/Linux) or Cmd + Option + L (macOS) while coding. Alternatively, you can also find the “Reformat Code” option in IDEA’s “Code” menu to perform the same action.

You can also customize the code style for other languages, such as JavaScript, HTML, CSS, etc., in the settings to meet the needs of different projects.