diff -r 18863bf3501f -r e0b8b019d2f5 src/java.base/share/classes/java/lang/Byte.java --- a/src/java.base/share/classes/java/lang/Byte.java Thu Aug 29 18:52:30 2019 -0400 +++ b/src/java.base/share/classes/java/lang/Byte.java Thu Aug 29 16:31:34 2019 -0700 @@ -561,5 +561,6 @@ public static final int BYTES = SIZE / Byte.SIZE; /** use serialVersionUID from JDK 1.1. for interoperability */ + @java.io.Serial private static final long serialVersionUID = -7183698231559129828L; }