src/java.base/share/classes/com/sun/java/util/jar/pack/Instruction.java

@@ -677,10 +677,11 @@
             }
             i = i.next();
         }
     }
     static class FormatException extends IOException {
+        @java.io.Serial
         private static final long serialVersionUID = 3175572275651367015L;
 
         FormatException(String message) {
             super(message);
         }