--- a/src/java.base/share/classes/jdk/internal/loader/URLClassPath.java	Fri Dec 07 17:11:17 2018 +0100
+++ b/src/java.base/share/classes/jdk/internal/loader/URLClassPath.java	Fri Dec 07 11:51:17 2018 -0500
@@ -97,10 +97,10 @@
         JAVA_VERSION = props.getProperty("java.version");
         DEBUG = (props.getProperty("sun.misc.URLClassPath.debug") != null);
         String p = props.getProperty("sun.misc.URLClassPath.disableJarChecking");
-        DISABLE_JAR_CHECKING = p != null ? p.equals("true") || p.equals("") : false;
+        DISABLE_JAR_CHECKING = p != null ? p.equals("true") || p.isEmpty() : false;
 
         p = props.getProperty("jdk.net.URLClassPath.disableRestrictedPermissions");
-        DISABLE_ACC_CHECKING = p != null ? p.equals("true") || p.equals("") : false;
+        DISABLE_ACC_CHECKING = p != null ? p.equals("true") || p.isEmpty() : false;
 
         // This property will be removed in a later release
         p = props.getProperty("jdk.net.URLClassPath.disableClassPathURLCheck", "true");