diff --git a/checkstyle.jar b/checkstyle.jar
new file mode 100644
index 00000000..82a98c4a
Binary files /dev/null and b/checkstyle.jar differ
diff --git a/package.json b/package.json
index 78f95d7d..31122711 100644
--- a/package.json
+++ b/package.json
@@ -12,8 +12,14 @@
     }
   },
   "lint-staged": {
-    "src/**/*.{ts,css,html}": [
+    "src/**/*.{ts,js}": [
       "eslint --fix"
+    ],
+    "**/*.java": [
+    "java -jar checkstyle.jar -c checkstyle.xml "
+  ],
+    "**/*.xml": [
+      "xmllint --noout "
     ]
   },
   "devDependencies": {