1 files changed, 14 insertions, 0 deletions

diff --git a/subprojects/language-web/build.gradle b/subprojects/language-web/build.gradle
index 9c1d93f3..8d277a5b 100644
--- a/subprojects/language-web/build.gradle
+++ b/subprojects/language-web/build.gradle
@@ -40,6 +40,18 @@ for (taskName in ['compileJava', 'processResources']) {
 
 mainClassName = 'tools.refinery.language.web.ServerLauncher'
 
+// Enable JDK 19 preview features for virtual thread support.
+application {
+        applicationDefaultJvmArgs += '--enable-preview'
+}
+tasks.withType(JavaCompile) {
+        options.release = 19
+        options.compilerArgs += '--enable-preview'
+}
+tasks.withType(Test) {
+        jvmArgs += '--enable-preview'
+}
+
 tasks.named('jar') {
         dependsOn project.configurations.webapp
         from(project.configurations.webapp) {
@@ -65,6 +77,8 @@ tasks.register('serveBackend', JavaExec) {
         dependsOn sourceSets.main.runtimeClasspath
         classpath = sourceSets.main.runtimeClasspath
         mainClass = mainClassName
+        // Enable JDK 19 preview features for virtual thread support.
+        jvmArgs += '--enable-preview'
         standardInput = System.in
         def baseResource = project.configurations.webapp.incoming.artifacts.artifactFiles.first()
         environment BASE_RESOURCE: baseResource