src/java.base/share/classes/sun/nio/ch/ServerSocketChannelImpl.java

*** 180,190 ****
  
      private static class DefaultOptionsHolder {
          static final Set<SocketOption<?>> defaultOptions = defaultOptions();
  
          private static Set<SocketOption<?>> defaultOptions() {
!             HashSet<SocketOption<?>> set = new HashSet<SocketOption<?>>(2);
              set.add(StandardSocketOptions.SO_RCVBUF);
              set.add(StandardSocketOptions.SO_REUSEADDR);
              set.add(StandardSocketOptions.IP_TOS);
              return Collections.unmodifiableSet(set);
          }
--- 180,190 ----
  
      private static class DefaultOptionsHolder {
          static final Set<SocketOption<?>> defaultOptions = defaultOptions();
  
          private static Set<SocketOption<?>> defaultOptions() {
!             HashSet<SocketOption<?>> set = new HashSet<>(2);
              set.add(StandardSocketOptions.SO_RCVBUF);
              set.add(StandardSocketOptions.SO_REUSEADDR);
              set.add(StandardSocketOptions.IP_TOS);
              return Collections.unmodifiableSet(set);
          }