diff --git a/.codacy.yml b/.codacy.yml
new file mode 100644
index 0000000..467cf0c
--- /dev/null
+++ b/.codacy.yml
@@ -0,0 +1,7 @@
+---
+exclude_paths:
+  - 'buildSrc/**'
+  - '*/test/**'
+  - '*/test-resources/**'
+  - 'misc/stylesheet.css'
+  
diff --git a/README.md b/README.md
index 2c841bf..263e92d 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,5 @@
-[![Java CI with Gradle](https://github.com/mnlipp/VM-Operator/actions/workflows/gradle.yml/badge.svg)](https://github.com/mnlipp/VM-Operator/actions/workflows/gradle.yml)
+[![Java CI with Gradle](https://github.com/mnlipp/VM-Operator/actions/workflows/gradle.yml/badge.svg)](https://github.com/mnlipp/VM-Operator/actions/workflows/gradle.yml) 
+[![Codacy Badge](https://app.codacy.com/project/badge/Grade/2277842dac894de4b663c6aa2779077e)](https://app.codacy.com/gh/mnlipp/VM-Operator/dashboard?utm_source=gh&utm_medium=referral&utm_content=&utm_campaign=Badge_grade)
 
 # Run Qemu in Kubernetes Pods
 
diff --git a/org.jdrupes.vmoperator.runner.qemu/src/org/jdrupes/vmoperator/runner/qemu/StateController.java b/org.jdrupes.vmoperator.runner.qemu/src/org/jdrupes/vmoperator/runner/qemu/StateController.java
index fdc3a4d..8561b88 100644
--- a/org.jdrupes.vmoperator.runner.qemu/src/org/jdrupes/vmoperator/runner/qemu/StateController.java
+++ b/org.jdrupes.vmoperator.runner.qemu/src/org/jdrupes/vmoperator/runner/qemu/StateController.java
@@ -23,7 +23,7 @@ package org.jdrupes.vmoperator.runner.qemu;
  */
 /* default */ class StateController {
 
-    private Runner runner;
+    private final Runner runner;
 
     /**
      * The state.
diff --git a/org.jdrupes.vmoperator.util/src/org/jdrupes/vmoperator/util/LongLoggingManager.java b/org.jdrupes.vmoperator.util/src/org/jdrupes/vmoperator/util/LongLoggingManager.java
index 7b64c9f..146de46 100644
--- a/org.jdrupes.vmoperator.util/src/org/jdrupes/vmoperator/util/LongLoggingManager.java
+++ b/org.jdrupes.vmoperator.util/src/org/jdrupes/vmoperator/util/LongLoggingManager.java
@@ -20,9 +20,16 @@ package org.jdrupes.vmoperator.util;
 
 import java.util.logging.LogManager;
 
+/**
+ * A logging manager that isn't disabled by a shutdown hook.
+ */
 public class LongLoggingManager extends LogManager {
     private static LongLoggingManager instance;
 
+    /**
+     * Instantiates a new long logging manager.
+     */
+    @SuppressWarnings("PMD.AssignmentToNonFinalStatic")
     public LongLoggingManager() {
         instance = this;
     }
@@ -36,6 +43,9 @@ public class LongLoggingManager extends LogManager {
         super.reset();
     }
 
+    /**
+     * Reset finally.
+     */
     public static void resetFinally() {
         instance.reset0();
     }