--- old/src/java.base/share/classes/java/util/jar/JarException.java	2019-08-27 17:29:17.466324386 -0700
+++ new/src/java.base/share/classes/java/util/jar/JarException.java	2019-08-27 17:29:17.290324386 -0700
@@ -34,6 +34,7 @@
  */
 public
 class JarException extends java.util.zip.ZipException {
+    @java.io.Serial
     private static final long serialVersionUID = 7159778400963954473L;
 
     /**