Space before parentheses:
https://github.com/openjdk/jdk/blob/master/src/jdk.httpserver/share/classes/com/sun/net/httpserver/package-info.java#L120 (and the following line)
And maybe here:
https://github.com/openjdk/jdk/blob/master/src/jdk.httpserver/share/classes/com/sun/net/httpserver/package-info.java#L130
And FWIW the whole block is incorrectly indented.
Same here (but the block is correctly indented here):
https://github.com/openjdk/jdk/blob/master/src/jdk.httpserver/share/classes/com/sun/net/httpserver/HttpsConfigurator.java#L44