--- a/src/java.base/share/classes/java/lang/Package.java	Thu Dec 13 16:14:07 2018 +0100
+++ b/src/java.base/share/classes/java/lang/Package.java	Thu Dec 13 15:31:05 2018 +0100
@@ -397,11 +397,11 @@
     public String toString() {
         String spec = versionInfo.specTitle;
         String ver =  versionInfo.specVersion;
-        if (spec != null && spec.length() > 0)
+        if (spec != null && !spec.isEmpty())
             spec = ", " + spec;
         else
             spec = "";
-        if (ver != null && ver.length() > 0)
+        if (ver != null && !ver.isEmpty())
             ver = ", version " + ver;
         else
             ver = "";