--- old/src/java.base/share/classes/java/lang/SecurityManager.java	2018-12-06 17:52:48.045354703 -0500
+++ new/src/java.base/share/classes/java/lang/SecurityManager.java	2018-12-06 17:52:47.869353831 -0500
@@ -1201,7 +1201,7 @@
 
     private static String[] getPackages(String p) {
         String packages[] = null;
-        if (p != null && !p.equals("")) {
+        if (p != null && !p.isEmpty()) {
             java.util.StringTokenizer tok =
                 new java.util.StringTokenizer(p, ",");
             int n = tok.countTokens();