--- old/src/java.base/share/classes/java/util/ArrayPrefixHelpers.java	2019-08-27 17:28:48.098324386 -0700
+++ new/src/java.base/share/classes/java/util/ArrayPrefixHelpers.java	2019-08-27 17:28:47.926324386 -0700
@@ -251,6 +251,7 @@
                 }
             }
         }
+        @java.io.Serial
         private static final long serialVersionUID = 5293554502939613543L;
     }
 
@@ -401,6 +402,7 @@
                 }
             }
         }
+        @java.io.Serial
         private static final long serialVersionUID = -5074099945909284273L;
     }
 
@@ -551,6 +553,7 @@
                 }
             }
         }
+        @java.io.Serial
         private static final long serialVersionUID = -586947823794232033L;
     }
 
@@ -701,6 +704,7 @@
                 }
             }
         }
+        @java.io.Serial
         private static final long serialVersionUID = 3731755594596840961L;
     }
 }