Java Formatter settings are not used

If I open the flow-server project from https://github.com/vaadin/flow/tree/main/flow-server

and have Eclipse formatter settings set to use https://raw.githubusercontent.com/vaadin/flow/main/eclipse/VaadinJavaConventions.xml which defines <setting id="org.eclipse.jdt.core.formatter.tabulation.size" value="4"/>

then when I open e.g. the HandlerHelperTest.java file, VS Code shows "Spaces: 8" in the bottom bar and formatting the file changes it to use indentation of 8 spaces instead of 4

The settings file should be fine because when I go back to command line and run mvn formatter:format in the project, the indentation is changed back to 4 spaces.

Environment

• Operating System: macOs Ventura
• JDK version: 17
• Visual Studio Code version: 1.76.2
• Java extension version: 1.16.0

Steps To Reproduce

1. See above

Current Result

File is not formatted according to given settings

Expected Result

File is formatted according to given settings

VS Code で VaadinJavaConventions.xml を設定した状態で flow-server を開いて問題を再現し、HandlerHelperTest.java のフォーマットを mvn formatter:format の結果と比較します。Java 拡張機能がフォーマッターの設定をどのように読み込み、適用するかを追跡します。VS Code が Maven formatter と一貫して設定済みの 4 スペースインデントを使用すれば完了です。