diff --git a/p3c-pmd/src/main/resources/rulesets/java/demo.java b/p3c-pmd/src/main/resources/rulesets/java/demo.java
new file mode 100644
index 000000000..8b1378917
--- /dev/null
+++ b/p3c-pmd/src/main/resources/rulesets/java/demo.java
@@ -0,0 +1 @@
+