How to replace all tab characters in a file by sequences of white-spaces in intellij?

Given a file in my project, I want to be able to replace all of the tab characters in the file with white spaces. Is there any way to do this in intellij?

How do I show whitespace characters in IntelliJ?

To enable this feature in IntelliJ, you must open the Settings dialog ( Ctrl+Alt+S ) and navigate to the Editor | General | Appearance tab. In this tab you need to enable the Show whitespace option. In addition, you can individually enable/disable which whitespaces to show: leading, trailing or inner.

How do you fix file contains tab characters This is the first instance?

To fix this Navigate to Preferences > Java > Code Style > Formatter. Then click on New > give name for the formatter > click on ok .

Go to Edit | Convert Indents , and then choose To Spaces or To Tabs respectively. It's in the documentation: Changing identation