How do I change Eclipse to use spaces instead of tabs?

 

By default Eclipse indents with a hard tab character. How do I change it to spaces?

Java Editor

  • Click Window » Preferences
  • Expand Java » Code Style
  • Click Formatter
  • Click the Edit button
  • Click the Indentation tab
  • Under General Settings , set Tab policy to: Spaces only
  • Click OK ad nauseam to apply the changes.

    • [ Note : If necessary save profile with a new name as the default profile cannot be overwritten.]

    Default Text Editor

    Before version 3.6: 

    Window->Preferences->Editors->Text Editors->Insert spaces for tabs

    Version 3.6 and later:

  • Click Window » Preferences
  • Expand General » Editors
  • Click Text Editors
  • Check Insert spaces for tabs
  • Click OK ad nauseam to apply the changes.

    • Note that the default text editor is used as the basis for many non-Java editors in Eclipse. It's astonishing that this setting wasn't available until 3.3.

    C / C++

  • Click Window » Preferences
  • Expand C/C++ » Code Style
  • Click Formatter
  • Click the New button to create a new profile, then OK to continue
  • Click the Indentation tab
  • Under General Settings , set Tab policy to: Spaces only
  • Click OK ad nauseam to apply the changes.

    • HTML

  • Click Window » Preferences
  • Expand Web » HTML Files
  • Click Editor
  • Under Formatting , select the Indent using spaces radio button
  • Click OK to apply the changes.

    • CSS

    Follow the same instructions for HTML, but select CSS Files instead of HTML Files .

    JSP

    By default, JSP files follow the formatting preferences for HTML Files.

    XML

    XML files spacing is configured in Preferences.

  • Click Window » Preferences
  • Expand XML » XML Files
  • Click Editor
  • Select Indent using spaces
  • You can specify the Indentation size if needed: number of spaces to indent.

    • For the default text editor:

  • General > Editors > Text Editors > Insert spaces for tabs (check it)

    • For PHP:

  • PHP > Code Style > Formatter > Tab policy (choose "spaces")
  • PHP > Code Style > Formatter > Indentation size (set to 4)

    • For CSS:

  • Web > CSS > Editor > Indent using spaces (select it)
  • Web > CSS > Editor > Indentation size (set to 4)

    • For HTML:

  • Web > HTML > Editor > Indent using spaces (select it)
  • Web > HTML > Editor > Indentation size (set to 4)

    • For XML:

  • XML > XML Files > Editor > Indent using spaces (select it)
  • XML > XML Files > Editor > Indentation size (set to 4)

    • For Javascript:

  • Javascript > Preferences > Code Style > Formatter > Edit > Indentation (choose "spaces only")
  • Rename the formatter settings profile to save it

    • For Java:

  • Java > Preferences > Code Style > Formatter > Edit > Indentation (choose "spaces only")
  • Rename the formatter settings profile to save it

    • From changing tabs to spaces in eclipse:

    Window->Preferences->Java->Code Style->Formatter->Edit->Indentation = "Spaces Only"

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