src/java.base/share/classes/java/security/PublicKey.java

@@ -48,7 +48,8 @@
     // Declare serialVersionUID to be compatible with JDK1.1
     /**
      * The class fingerprint that is set to indicate serialization
      * compatibility with a previous version of the class.
      */
+    @SuppressWarnings("serial") // serialVersionUID in an interface is ineffectual
     static final long serialVersionUID = 7187392471159151072L;
 }