java.net.http orElse(null) in SSLDelegate and other nits

[Bernd Eckenfels]

Hello,

trying to understand the new jdk9 hierachy I noticed that this code:

http://hg.openjdk.java.net/jdk9/jdk9/jdk/file/ca7fb78b94b6/src/java.httpclient/share/classes/java/net/http/SSLDelegate.java#l59

      SSLParameters sslp = client.sslParameters().orElse(null);
      if (sslp == null) {
          sslp = context.getSupportedSSLParameters();
      }

seems to use a Optional anti-pattern. How about:

    SSLParameters sslp = 
client.sslParameters().orElseGet(context::getSupportedSSLParameters);

(If there is a reason for not using lambda, it might need a comment?)

Also I wonder if this parameter conversion and string concatenation should be 
conditional?

Log.logSSL("Setting application protocols: " + Arrays.toString(alpn));


Gruss
Bernd