--- a/src/java.base/share/classes/sun/net/www/http/HttpClient.java	Thu Dec 13 16:14:07 2018 +0100
+++ b/src/java.base/share/classes/sun/net/www/http/HttpClient.java	Thu Dec 13 15:31:05 2018 +0100
@@ -603,7 +603,7 @@
             StringBuilder result = new StringBuilder(128);
             result.append(url.getProtocol());
             result.append(":");
-            if (url.getAuthority() != null && url.getAuthority().length() > 0) {
+            if (url.getAuthority() != null && !url.getAuthority().isEmpty()) {
                 result.append("//");
                 result.append(url.getAuthority());
             }
@@ -619,7 +619,7 @@
         } else {
             fileName = url.getFile();
 
-            if ((fileName == null) || (fileName.length() == 0)) {
+            if ((fileName == null) || (fileName.isEmpty())) {
                 fileName = "/";
             } else if (fileName.charAt(0) == '?') {
                 /* HTTP/1.1 spec says in 5.1.2. about Request-URI: