IntelliJ IDEA如何实现Eclipse式鼠标悬停弹出JavaDoc？为何@author不显示？

Hey there! Let me walk you through how to set up IntelliJ IDEA to show JavaDoc on hover just like Eclipse, and fix the missing @author info issue you're seeing.

Getting the hover popup working is straightforward—just tweak a few settings:

• Open IntelliJ IDEA and head to File > Settings (or IntelliJ IDEA > Settings if you're on macOS)
• In the settings window, navigate to Editor > General
• Look for the Code Completion section. Find the Show documentation popup in option, set your preferred delay (you can set it to 0 for instant popups, matching Eclipse's behavior)
• Make sure the checkbox next to this option is checked. Also, in the Other subsection of Editor > General, confirm that Show quick documentation on mouse move is enabled—this is critical for the hover functionality
• Hit Apply then OK to save changes. Now hovering over classes, methods, or variables will trigger the JavaDoc popup just like you're used to in Eclipse.

The short answer is: IntelliJ hides @author by default to keep documentation popups clean. But you can easily re-enable it:

• Go back to File > Settings (or IntelliJ IDEA > Settings on macOS)
• Navigate to Editor > General > Documentation
• In the Rendered documentation section, look for the Do not show list. Find @author in that list, select it, and click the minus button - to remove it
• (Optional) You can also check the Show tags section to ensure @author is included there, though removing it from the "Do not show" list is usually sufficient
• Save your changes with Apply and OK. Now the @author information will appear in all JavaDoc popups, just like in Eclipse.

Pro tip: If you ever want to pull up the JavaDoc instantly without waiting for the hover, use the shortcut Ctrl+Q (Windows/Linux) or F1 (macOS) to bring it up right away.

内容的提问来源于stack exchange，提问作者Stephen.lin