diff --git a/metals/src/main/scala/scala/meta/internal/metals/MetalsEnrichments.scala b/metals/src/main/scala/scala/meta/internal/metals/MetalsEnrichments.scala
index caacc01a12a..83350fbc0e3 100644
--- a/metals/src/main/scala/scala/meta/internal/metals/MetalsEnrichments.scala
+++ b/metals/src/main/scala/scala/meta/internal/metals/MetalsEnrichments.scala
@@ -303,9 +303,14 @@ object MetalsEnrichments
 
   implicit class XtensionAbsolutePathBuffers(path: AbsolutePath) {
 
-    def isScalaProject(extendSearchToScriptsAndSbt: Boolean = true): Boolean = {
-      val isScala: String => Boolean =
-        if (extendSearchToScriptsAndSbt) _.isScalaFilename else _.isScala
+    def isScalaProject(): Boolean =
+      containsProjectFilesSatisfying(_.isScala)
+    def isMetalsProject(): Boolean =
+      containsProjectFilesSatisfying(_.isScalaOrJavaFilename)
+
+    private def containsProjectFilesSatisfying(
+        fileNamePredicate: String => Boolean
+    ): Boolean = {
       val directoriesToCheck = Set("test", "src", "it")
       def dirFilter(f: File) = directoriesToCheck(f.getName()) || f
         .listFiles()
@@ -316,7 +321,7 @@ object MetalsEnrichments
       ): Boolean = {
         file.listFiles().exists { file =>
           if (file.isDirectory()) dirFilter(file) && isScalaDir(file)
-          else isScala(file.getName())
+          else fileNamePredicate(file.getName())
         }
       }
       path.isDirectory && isScalaDir(path.toFile, dirFilter)
diff --git a/metals/src/main/scala/scala/meta/internal/metals/MetalsLspService.scala b/metals/src/main/scala/scala/meta/internal/metals/MetalsLspService.scala
index ba75dbf032e..2cbdc31b310 100644
--- a/metals/src/main/scala/scala/meta/internal/metals/MetalsLspService.scala
+++ b/metals/src/main/scala/scala/meta/internal/metals/MetalsLspService.scala
@@ -128,7 +128,7 @@ class MetalsLspService(
     folder: AbsolutePath,
     folderVisibleName: Option[String],
     headDoctor: HeadDoctor,
-) extends Folder(folder, folderVisibleName, isKnownScalaProject = true)
+) extends Folder(folder, folderVisibleName, isKnownMetalsProject = true)
     with Cancelable
     with TextDocumentService {
   import serverInputs._
@@ -1980,7 +1980,7 @@ class MetalsLspService(
     if (
       !buildTools.isAutoConnectable
       && buildTools.loadSupported.isEmpty
-      && folder.isScalaProject(extendSearchToScriptsAndSbt = false)
+      && folder.isScalaProject()
     ) {
       scalaCli.setupIDE(folder)
     } else Future.successful(())
diff --git a/metals/src/main/scala/scala/meta/internal/metals/WorkspaceFolders.scala b/metals/src/main/scala/scala/meta/internal/metals/WorkspaceFolders.scala
index e27d3be5b7a..72018c184b1 100644
--- a/metals/src/main/scala/scala/meta/internal/metals/WorkspaceFolders.scala
+++ b/metals/src/main/scala/scala/meta/internal/metals/WorkspaceFolders.scala
@@ -17,7 +17,7 @@ class WorkspaceFolders(
 
   private val folderServices: AtomicReference[WorkspaceFoldersServices] = {
     val (scalaProjects, nonScalaProjects) =
-      initialFolders.partition(_.isScalaProject) match {
+      initialFolders.partition(_.isMetalsProject) match {
         case (Nil, nonScala) => (List(nonScala.head), nonScala.tail)
         case t => t
       }
@@ -37,7 +37,7 @@ class WorkspaceFolders(
     def shouldBeRemoved(folder: Folder) =
       actualToRemove.exists(_.path == folder.path)
 
-    val (newScala, newNonScala) = toAdd.partition(_.isScalaProject)
+    val (newScala, newNonScala) = toAdd.partition(_.isMetalsProject)
     val newServices = newScala.map(createService(_))
     if (newServices.isEmpty && getFolderServices.forall(shouldBeRemoved)) {
       shutdownMetals()
diff --git a/metals/src/main/scala/scala/meta/internal/metals/WorkspaceLspService.scala b/metals/src/main/scala/scala/meta/internal/metals/WorkspaceLspService.scala
index 067f6c12de6..81ac8b7d68f 100644
--- a/metals/src/main/scala/scala/meta/internal/metals/WorkspaceLspService.scala
+++ b/metals/src/main/scala/scala/meta/internal/metals/WorkspaceLspService.scala
@@ -324,7 +324,7 @@ class WorkspaceLspService(
     focusedDocument = Some(path)
     val service = getServiceForOpt(path)
       .orElse {
-        if (path.isScalaFilename) {
+        if (path.filename.isScalaOrJavaFilename) {
           getFolderForOpt(path, nonScalaProjects)
             .map(workspaceFolders.convertToScalaProject)
         } else None
@@ -542,13 +542,13 @@ class WorkspaceLspService(
         params
           .getEvent()
           .getRemoved()
-          .map(Folder(_, isKnownScalaProject = false))
+          .map(Folder(_, isKnownMetalsProject = false))
           .asScala
           .toList,
         params
           .getEvent()
           .getAdded()
-          .map(Folder(_, isKnownScalaProject = false))
+          .map(Folder(_, isKnownMetalsProject = false))
           .asScala
           .toList,
       )
@@ -1271,11 +1271,11 @@ class WorkspaceLspService(
 class Folder(
     val path: AbsolutePath,
     val visibleName: Option[String],
-    isKnownScalaProject: Boolean,
+    isKnownMetalsProject: Boolean,
 ) {
-  lazy val isScalaProject: Boolean =
-    isKnownScalaProject || path.resolve(".metals").exists || path
-      .isScalaProject()
+  lazy val isMetalsProject: Boolean =
+    isKnownMetalsProject || path.resolve(".metals").exists || path
+      .isMetalsProject()
   def nameOrUri: String = visibleName.getOrElse(path.toString())
 }
 
@@ -1285,12 +1285,12 @@ object Folder {
   )
   def apply(
       folder: lsp4j.WorkspaceFolder,
-      isKnownScalaProject: Boolean,
+      isKnownMetalsProject: Boolean,
   ): Folder = {
     val name = Option(folder.getName()) match {
       case Some("") => None
       case maybeValue => maybeValue
     }
-    new Folder(folder.getUri().toAbsolutePath, name, isKnownScalaProject)
+    new Folder(folder.getUri().toAbsolutePath, name, isKnownMetalsProject)
   }
 }
diff --git a/metals/src/main/scala/scala/meta/metals/MetalsLanguageServer.scala b/metals/src/main/scala/scala/meta/metals/MetalsLanguageServer.scala
index 4f844381e16..a648fef166c 100644
--- a/metals/src/main/scala/scala/meta/metals/MetalsLanguageServer.scala
+++ b/metals/src/main/scala/scala/meta/metals/MetalsLanguageServer.scala
@@ -140,12 +140,12 @@ class MetalsLanguageServer(
                 new Folder(
                   root.toAbsolutePath,
                   Some("root"),
-                  isKnownScalaProject = true,
+                  isKnownMetalsProject = true,
                 )
               )
               .toList
-          case head :: Nil => List(Folder(head, isKnownScalaProject = true))
-          case many => many.map(Folder(_, isKnownScalaProject = false))
+          case head :: Nil => List(Folder(head, isKnownMetalsProject = true))
+          case many => many.map(Folder(_, isKnownMetalsProject = false))
         }
       }
 
@@ -174,7 +174,7 @@ class MetalsLanguageServer(
 
           val folderPathsWithScala =
             folders.collect {
-              case folder if folder.isScalaProject => folder.path
+              case folder if folder.isMetalsProject => folder.path
             } match {
               case Nil =>
                 scribe.warn(