--- old/src/java.xml/share/classes/javax/xml/catalog/CatalogFeatures.java	2018-12-06 17:53:43.613630252 -0500
+++ new/src/java.xml/share/classes/javax/xml/catalog/CatalogFeatures.java	2018-12-06 17:53:43.445629419 -0500
@@ -619,13 +619,13 @@
     private boolean getSystemProperty(Feature cf, String sysPropertyName) {
         if (cf.hasSystemProperty()) {
             String value = SecuritySupport.getSystemProperty(sysPropertyName);
-            if (value != null && !value.equals("")) {
+            if (value != null && !value.isEmpty()) {
                 setProperty(cf, State.SYSTEMPROPERTY, value);
                 return true;
             }
 
             value = SecuritySupport.readJAXPProperty(sysPropertyName);
-            if (value != null && !value.equals("")) {
+            if (value != null && !value.isEmpty()) {
                 setProperty(cf, State.JAXPDOTPROPERTIES, value);
                 return true;
             }