diff --git a/build.sbt b/build.sbt
index 08729ba5..fbdc08e7 100644
--- a/build.sbt
+++ b/build.sbt
@@ -1242,13 +1242,19 @@ lazy val interpreter = crossProject(JSPlatform, JVMPlatform, NativePlatform)
       val cp = (Compile / dependencyClasspath).value.map(_.data)
       val processorJars = cp.filter(_.getName.contains("truffle-dsl-processor"))
       val processorPath = processorJars.map(_.getAbsolutePath).mkString(java.io.File.pathSeparator)
+      val generatedSourcesDir = (Compile / sourceManaged).value / "generated" / "truffle"
+      println(s"processorJars: $processorJars")
+      println(s"processorPath: $processorPath")
+      println(s"generatedSourcesDir: $generatedSourcesDir")
       Seq(
         "-processor", "com.oracle.truffle.dsl.processor.TruffleProcessor",
         "-processorpath", processorPath,
+        "-s", generatedSourcesDir.getAbsolutePath,
         "-source", "17",
         "-target", "17"
       )
-    }
+    },
+    Compile / unmanagedSourceDirectories += (Compile / sourceManaged).value / "generated" / "truffle"
   )
 
 lazy val root = crossProject(JSPlatform, JVMPlatform, NativePlatform)
diff --git a/interpreter/jvm/src/main/scala/chester/truffle/ChesterLang.java b/interpreter/jvm/src/main/scala/chester/truffle/ChesterLang.java
new file mode 100644
index 00000000..7057391a
--- /dev/null
+++ b/interpreter/jvm/src/main/scala/chester/truffle/ChesterLang.java
@@ -0,0 +1,19 @@
+package chester.truffle;
+
+import com.oracle.truffle.api.CallTarget;
+import com.oracle.truffle.api.TruffleLanguage;
+import com.oracle.truffle.api.TruffleLanguage.Env;
+import com.oracle.truffle.api.TruffleLanguage.ParsingRequest;
+
+@TruffleLanguage.Registration(id = "cst", name = "Chester")
+public class ChesterLang extends TruffleLanguage<ChesterContext> {
+    @Override
+    protected CallTarget parse(ParsingRequest request) throws Exception {
+        throw new UnsupportedOperationException("Not implemented yet");
+    }
+
+    @Override
+    protected ChesterContext createContext(Env env) {
+        return null;
+    }
+}
\ No newline at end of file
diff --git a/interpreter/jvm/src/main/scala/chester/truffle/index.scala b/interpreter/jvm/src/main/scala/chester/truffle/index.scala
index 157c0014..32cac642 100644
--- a/interpreter/jvm/src/main/scala/chester/truffle/index.scala
+++ b/interpreter/jvm/src/main/scala/chester/truffle/index.scala
@@ -4,13 +4,3 @@ import com.oracle.truffle.api.{CallTarget, TruffleLanguage}
 import com.oracle.truffle.api.TruffleLanguage.{Env, ParsingRequest}
 
 trait ChesterContext
-
-@TruffleLanguage.Registration(id = "cst", name = "Chester")
-class ChesterLang extends TruffleLanguage[ChesterContext] {
-  @throws[Exception]
-  override protected def parse(request: ParsingRequest): CallTarget = {
-    ???
-  }
-
-  override protected def createContext(env: Env): ChesterContext = null
-}
\ No newline at end of file