--- a/src/hotspot/share/prims/jvm.cpp	Fri Nov 09 10:15:43 2018 -0800
+++ b/src/hotspot/share/prims/jvm.cpp	Fri Nov 09 13:28:16 2018 -0500
@@ -364,6 +364,8 @@
   // System property list includes both user set via -D option and
   // jvm system specific properties.
   for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) {
+    if (strcmp(p->key(), "sun.nio.MaxDirectMemorySize") == 0)  // Can not be defined with -D
+      continue;
     PUTPROP(props, p->key(), p->value());
   }
 
@@ -371,14 +373,11 @@
   // to the sun.nio.MaxDirectMemorySize property.
   // Do this after setting user properties to prevent people
   // from setting the value with a -D option, as requested.
-  {
-    if (FLAG_IS_DEFAULT(MaxDirectMemorySize)) {
-      PUTPROP(props, "sun.nio.MaxDirectMemorySize", "-1");
-    } else {
-      char as_chars[256];
-      jio_snprintf(as_chars, sizeof(as_chars), JULONG_FORMAT, MaxDirectMemorySize);
-      PUTPROP(props, "sun.nio.MaxDirectMemorySize", as_chars);
-    }
+  // Leave empty if not supplied
+  if (!FLAG_IS_DEFAULT(MaxDirectMemorySize)) {
+    char as_chars[256];
+    jio_snprintf(as_chars, sizeof(as_chars), JULONG_FORMAT, MaxDirectMemorySize);
+    PUTPROP(props, "sun.nio.MaxDirectMemorySize", as_chars);
   }
 
   // JVM monitoring and management support

--- a/src/java.base/share/classes/java/lang/System.java	Fri Nov 09 10:15:43 2018 -0800
+++ b/src/java.base/share/classes/java/lang/System.java	Fri Nov 09 13:28:16 2018 -0500
@@ -802,6 +802,7 @@
         if (props == null) {
             props = new Properties();
             initProperties(props);
+            VersionProps.init(props);
         }
         System.props = props;
     }
@@ -1973,6 +1974,7 @@
         // be put into it directly.
         props = new Properties(84);
         initProperties(props);  // initialized by the VM
+        VersionProps.init(props);
 
         // There are certain system configurations that may be controlled by
         // VM options such as the maximum amount of direct memory and
@@ -1992,7 +1994,6 @@
 
         lineSeparator = props.getProperty("line.separator");
         StaticProperty.javaHome();          // Load StaticProperty to cache the property values
-        VersionProps.init();
 
         FileInputStream fdIn = new FileInputStream(FileDescriptor.in);
         FileOutputStream fdOut = new FileOutputStream(FileDescriptor.out);

--- a/src/java.base/share/classes/java/lang/VersionProps.java.template	Fri Nov 09 10:15:43 2018 -0800
+++ b/src/java.base/share/classes/java/lang/VersionProps.java.template	Fri Nov 09 13:28:16 2018 -0500
@@ -29,6 +29,7 @@
 import java.util.Arrays;
 import java.util.List;
 import java.util.Optional;
+import java.util.Properties;
 
 class VersionProps {
 
@@ -69,17 +70,13 @@
         (VENDOR_VERSION_STRING.length() > 0
          ? " " + VENDOR_VERSION_STRING : "");
 
-    static {
-        init();
-    }
-
-    public static void init() {
-        System.setProperty("java.version", java_version);
-        System.setProperty("java.version.date", java_version_date);
-        System.setProperty("java.runtime.version", java_runtime_version);
-        System.setProperty("java.runtime.name", java_runtime_name);
+    public static void init(Properties props) {
+        props.setProperty("java.version", java_version);
+        props.setProperty("java.version.date", java_version_date);
+        props.setProperty("java.runtime.version", java_runtime_version);
+        props.setProperty("java.runtime.name", java_runtime_name);
         if (VENDOR_VERSION_STRING.length() > 0)
-            System.setProperty("java.vendor.version", VENDOR_VERSION_STRING);
+            props.setProperty("java.vendor.version", VENDOR_VERSION_STRING);
     }
 
     private static int parseVersionNumber(String version, int prevIndex, int index) {

--- a/src/java.base/share/classes/jdk/internal/misc/VM.java	Fri Nov 09 10:15:43 2018 -0800
+++ b/src/java.base/share/classes/jdk/internal/misc/VM.java	Fri Nov 09 13:28:16 2018 -0500
@@ -199,17 +199,16 @@
         // by the vm option -XX:MaxDirectMemorySize=<size>.
         // The maximum amount of allocatable direct buffer memory (in bytes)
         // from the system property sun.nio.MaxDirectMemorySize set by the VM.
+        // If not set or set to -1, the max memory will be used
         // The system property will be removed.
         String s = (String)props.remove("sun.nio.MaxDirectMemorySize");
-        if (s != null) {
-            if (s.equals("-1")) {
-                // -XX:MaxDirectMemorySize not given, take default
-                directMemory = Runtime.getRuntime().maxMemory();
-            } else {
-                long l = Long.parseLong(s);
-                if (l > -1)
-                    directMemory = l;
-            }
+        if (s == null || s.isEmpty() || s.equals("-1")) {
+            // -XX:MaxDirectMemorySize not given, take default
+            directMemory = Runtime.getRuntime().maxMemory();
+        } else {
+            long l = Long.parseLong(s);
+            if (l > -1)
+                directMemory = l;
         }
 
         // Check if direct buffers should be page aligned

--- a/src/java.base/share/native/libjava/System.c	Fri Nov 09 10:15:43 2018 -0800
+++ b/src/java.base/share/native/libjava/System.c	Fri Nov 09 13:28:16 2018 -0500
@@ -211,7 +211,6 @@
     PUTPROP(props, "java.specification.vendor",
             JAVA_SPECIFICATION_VENDOR);
 
-    PUTPROP(props, "java.version", VERSION_SHORT);
     PUTPROP(props, "java.vendor", VENDOR);
     PUTPROP(props, "java.vendor.url", VENDOR_URL);
     PUTPROP(props, "java.vendor.url.bug", VENDOR_URL_BUG);
@@ -255,8 +254,10 @@
 
     /* unicode_encoding specifies the default endianness */
     PUTPROP(props, "sun.io.unicode.encoding", sprops->unicode_encoding);
-    PUTPROP(props, "sun.cpu.isalist",
-            (sprops->cpu_isalist ? sprops->cpu_isalist : ""));
+    if (sprops->cpu_isalist  != NULL) {
+        // leave undefined if none
+        PUTPROP(props, "sun.cpu.isalist", sprops->cpu_isalist);
+    }
     PUTPROP(props, "sun.cpu.endian",  sprops->cpu_endian);
 
 
@@ -330,8 +331,10 @@
                     sprops->data_model);
 
     /* patch level */
-    PUTPROP(props, "sun.os.patch.level",  \
+    if (sprops->patch_level != NULL) {
+        PUTPROP(props, "sun.os.patch.level",  \
                     sprops->patch_level);
+    }
 
     /* Java2D properties */
     /* Note: java.awt.graphicsenv is an implementation private property which
@@ -354,9 +357,6 @@
 
     PUTPROP_ForPlatformNString(props, "user.name", sprops->user_name);
     PUTPROP_ForPlatformNString(props, "user.home", sprops->user_home);
-
-    PUTPROP(props, "user.timezone", sprops->timezone);
-
     PUTPROP_ForPlatformNString(props, "user.dir", sprops->user_dir);
 
     /* This is a sun. property as it is currently only set for Gnome and

--- a/src/java.base/share/native/libjava/java_props.h	Fri Nov 09 10:15:43 2018 -0800
+++ b/src/java.base/share/native/libjava/java_props.h	Fri Nov 09 13:28:16 2018 -0500
@@ -56,23 +56,18 @@
     nchar *user_name;
     nchar *user_home;
 
-    char *language;
     char *format_language;
     char *display_language;
-    char *script;
     char *format_script;
     char *display_script;
-    char *country;
     char *format_country;
     char *display_country;
-    char *variant;
     char *format_variant;
     char *display_variant;
     char *encoding;
     char *sun_jnu_encoding;
     char *sun_stdout_encoding;
     char *sun_stderr_encoding;
-    char *timezone;
 
     char *printerJob;
     char *graphics_env;

--- a/src/java.base/unix/native/libjava/java_props_md.c	Fri Nov 09 10:15:43 2018 -0800
+++ b/src/java.base/unix/native/libjava/java_props_md.c	Fri Nov 09 13:28:16 2018 -0500
@@ -399,7 +399,7 @@
 #endif
 
     /* patches/service packs installed */
-    sprops.patch_level = "unknown";
+    sprops.patch_level = NULL;      // leave it undefined
 
     /* Java 2D/AWT properties */
 #ifdef MACOSX
@@ -488,19 +488,15 @@
                     &(sprops.format_variant),
                     &(sprops.encoding))) {
         ParseLocale(env, LC_MESSAGES,
-                    &(sprops.language),
-                    &(sprops.script),
-                    &(sprops.country),
-                    &(sprops.variant),
+                    &(sprops.display_language),
+                    &(sprops.display_script),
+                    &(sprops.display_country),
+                    &(sprops.display_variant),
                     NULL);
     } else {
-        sprops.language = "en";
+        sprops.display_language = "en";
         sprops.encoding = "ISO8859-1";
     }
-    sprops.display_language = sprops.language;
-    sprops.display_script = sprops.script;
-    sprops.display_country = sprops.country;
-    sprops.display_variant = sprops.variant;
 
     /* ParseLocale failed with OOME */
     JNU_CHECK_EXCEPTION_RETURN(env, NULL);
@@ -543,18 +539,12 @@
         }
     }
 
-    /* User TIMEZONE */
-    {
-        /*
-         * We defer setting up timezone until it's actually necessary.
-         * Refer to TimeZone.getDefault(). However, the system
-         * property is necessary to be able to be set by the command
-         * line interface -D. Here temporarily set a null string to
-         * timezone.
-         */
-        tzset();        /* for compatibility */
-        sprops.timezone = "";
-    }
+    /* User TIMEZONE
+     * We defer setting up timezone until it's actually necessary.
+     * Refer to TimeZone.getDefault(). The system property
+     * is able to be set by the command line interface -Duser.timezone.
+     */
+    tzset();        /* for compatibility */
 
     /* Current directory */
     {

--- a/src/java.base/windows/native/libjava/java_props_md.c	Fri Nov 09 10:15:43 2018 -0800
+++ b/src/java.base/windows/native/libjava/java_props_md.c	Fri Nov 09 13:28:16 2018 -0500
@@ -661,12 +661,6 @@
                 userDefaultUILang = userDefaultLCID;
             }
 
-            SetupI18nProps(userDefaultUILang,
-                           &sprops.language,
-                           &sprops.script,
-                           &sprops.country,
-                           &sprops.variant,
-                           &display_encoding);
             SetupI18nProps(userDefaultLCID,
                            &sprops.format_language,
                            &sprops.format_script,
@@ -710,17 +704,12 @@
     }
 
     sprops.unicode_encoding = "UnicodeLittle";
-    /* User TIMEZONE */
-    {
-        /*
-         * We defer setting up timezone until it's actually necessary.
-         * Refer to TimeZone.getDefault(). However, the system
-         * property is necessary to be able to be set by the command
-         * line interface -D. Here temporarily set a null string to
-         * timezone.
-         */
-        sprops.timezone = "";
-    }
+
+    /* User TIMEZONE
+     * We defer setting up timezone until it's actually necessary.
+     * Refer to TimeZone.getDefault(). The system property
+     * is able to be set by the command line interface -Duser.timezone.
+     */
 
     /* Current directory */
     {

--- a/test/jdk/java/lang/System/ClearProperty.java	Fri Nov 09 10:15:43 2018 -0800
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,60 +0,0 @@
-/*
- * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- */
-
-/*
- * @test
- * @bug 4463345
- * @summary Simple test of System.clearProperty
- * @run main/othervm ClearProperty
- */
-
-public class ClearProperty {
-    public static void main(String [] argv) throws Exception {
-        clearTest();
-        paramTest();
-    }
-
-    static void clearTest() throws Exception {
-        System.setProperty("blah", "blech");
-        if (!System.getProperty("blah").equals("blech"))
-            throw new RuntimeException("Clear test failed 1");
-        System.clearProperty("blah");
-        if (System.getProperty("blah") != null)
-            throw new RuntimeException("Clear test failed 2");
-    }
-
-    static void paramTest() throws Exception {
-        try {
-            System.clearProperty(null);
-            throw new RuntimeException("Param test failed");
-        } catch (NullPointerException npe) {
-            // Correct result
-        }
-        try {
-            System.clearProperty("");
-            throw new RuntimeException("Param test failed");
-        } catch (IllegalArgumentException iae) {
-            // Correct result
-        }
-    }
-}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/java/lang/System/PropertyTest.java	Fri Nov 09 13:28:16 2018 -0500
@@ -0,0 +1,260 @@
+/*
+ * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+import java.lang.System;
+import java.util.Arrays;
+import java.util.List;
+import java.util.Objects;
+import java.util.Properties;
+import java.util.stream.Collectors;
+
+import org.testng.Assert;
+import org.testng.IMethodInstance;
+import org.testng.IMethodInterceptor;
+import org.testng.TestListenerAdapter;
+import org.testng.TestNG;
+import org.testng.annotations.BeforeTest;
+import org.testng.annotations.DataProvider;
+import org.testng.annotations.Test;
+
+
+/*
+ * @test
+ * @bug 4463345 4244670 8030781
+ * @summary Simple test of System getProperty, setProperty, clearProperty,
+ *      getProperties, and setProperties
+ * @run testng/othervm PropertyTest
+ */
+
+@Test
+public class PropertyTest {
+
+    @DataProvider(name = "requiredProperties")
+    static Object[][] requiredProperties() {
+        return new Object[][]{
+                {"java.version"},
+                {"java.version.date"},
+                {"java.vendor"},
+                {"java.vendor.url"},
+                {"java.home"},
+                {"java.vm.specification.version"},
+                {"java.vm.specification.vendor"},
+                {"java.vm.specification.name"},
+                {"java.vm.version"},
+                {"java.vm.vendor"},
+                {"java.vm.name"},
+                {"java.specification.version"},
+                {"java.specification.vendor"},
+                {"java.specification.name"},
+                {"java.class.version"},
+                {"java.class.path"},
+                {"java.library.path"},
+                {"java.io.tmpdir"},
+                {"os.arch"},
+                {"os.version"},
+                {"file.separator"},
+                {"path.separator"},
+                {"line.separator"},
+                {"user.name"},
+                {"user.home"},
+                {"user.dir"},
+                {"java.runtime.version"},
+                {"java.runtime.name"},
+        };
+    }
+
+    @Test
+    static void getTest() {
+        System.setProperty("blah", "blech");
+        Assert.assertEquals(System.getProperty("blah"), "blech");
+
+        try {
+            System.getProperty(null);
+            Assert.fail("Failed: expected NullPointerException");
+        } catch (NullPointerException npe) {
+            // Correct result
+        }
+        try {
+            System.getProperty("");
+            Assert.fail("Failed: expected IllegalArgumentException");
+        } catch (IllegalArgumentException iae) {
+            // Correct result
+        }
+    }
+
+    @Test
+    static void clearTest() {
+        System.setProperty("blah", "blech");
+        Assert.assertEquals(System.getProperty("blah"), "blech");
+
+        System.clearProperty("blah");
+        Assert.assertNull(System.getProperty("blah"));
+
+        try {
+            System.clearProperty(null);
+            Assert.fail("Failed: expected NullPointerException");
+        } catch (NullPointerException npe) {
+            // Correct result
+        }
+        try {
+            System.clearProperty("");
+            Assert.fail("Failed: expected IllegalArgumentException");
+        } catch (IllegalArgumentException iae) {
+            // Correct result
+        }
+    }
+
+    @Test
+    static void setTest() {
+        System.setProperty("blah", "blech");
+        Assert.assertEquals(System.getProperty("blah"), "blech");
+
+        System.setProperty("blah", "");
+        Assert.assertEquals(System.getProperty("blah"), "");
+
+        try {
+            System.setProperty(null, null);
+            Assert.fail("Failed: expected NullPointerException");
+        } catch (NullPointerException npe) {
+            // Correct result
+        }
+
+        try {
+            System.setProperty("blah", null);
+            Assert.fail("Failed: expected NullPointerException");
+        } catch (NullPointerException npe) {
+            // Correct result
+        }
+
+        try {
+            System.setProperty(null, "blech");
+            Assert.fail("Failed: expected NullPointerException");
+        } catch (NullPointerException npe) {
+            // Correct result
+        }
+
+        try {
+            System.setProperty("", "blech");
+            Assert.fail("Failed: expected IllegalArgumentException");
+        } catch (IllegalArgumentException iae) {
+            // Correct result
+        }
+        try {
+            System.setProperty("", "");
+            Assert.fail("Failed: expected IllegalArgumentException");
+        } catch (IllegalArgumentException iae) {
+            // Correct result
+        }
+    }
+
+    @Test
+    static void replaceSetProperties() {
+        Properties oldProps = System.getProperties();
+        Properties newProps = new Properties();
+        oldProps.forEach( (k,v) -> newProps.put(k,v));
+        System.setProperties(newProps);
+
+        Assert.assertSame(System.getProperties(), newProps,
+                "getProperties not the same as setProperties");
+
+        final String KEY = "blah";
+        final String VALUE = "blech";
+
+        // Set via Property instance; get via System methods
+        newProps.setProperty(KEY, VALUE);
+        Assert.assertEquals(System.getProperty(KEY), VALUE, KEY);
+
+        String s = (String)newProps.remove(KEY);
+        Assert.assertEquals(s, VALUE);
+        Assert.assertNull(System.getProperty(KEY), KEY);
+
+        // Set via System methods; Get via Property instance;
+        System.setProperty(KEY, VALUE);
+        Assert.assertEquals(newProps.getProperty(KEY), VALUE);
+
+        String t = System.clearProperty(KEY);
+        Assert.assertEquals(t, VALUE, KEY);
+        Assert.assertNull(newProps.getProperty(KEY), KEY);
+    }
+
+    @Test
+    static void setNullProperties() {
+        Properties oldProps = System.getProperties();
+        Properties savedProps = new Properties();
+        oldProps.forEach((k,v) -> {
+            if (v == null) {
+                throw new RuntimeException("null value, key: " + k);
+            }
+            savedProps.put(k,v);
+        });
+
+        // Re-initialize properties
+        System.setProperties(null);
+
+        Properties newProps = System.getProperties();
+        Object[][] propnames = requiredProperties();
+        for (Object[] p : propnames) {
+            String name = (String)p[0];
+            Assert.assertEquals(System.getProperty(name), savedProps.getProperty(name), name);
+
+            Assert.assertEquals(newProps.getProperty(name), savedProps.getProperty(name), name);
+        }
+    }
+
+    // Verify all the required properties have values from System.getProperty and
+    // System.getProperties()
+    @Test(dataProvider = "requiredProperties")
+    static void checkRequiredProperties(String name) {
+        Assert.assertNotNull(System.getProperty(name), name);
+
+        Properties props = System.getProperties();
+        Assert.assertNotNull(props.getProperty(name), name);
+    }
+
+    @SuppressWarnings("raw_types")
+    @Test(enabled=false)
+    public static void main(String[] args) {
+        TestListenerAdapter tla = new TestListenerAdapter();
+
+        Class<?>[] testclass = {PropertyTest.class};
+        TestNG testng = new TestNG();
+        testng.setTestClasses(testclass);
+        testng.addListener(tla);
+        if (args.length > 0) {
+            IMethodInterceptor intercept = (m, c) -> {
+                List<IMethodInstance> x = m.stream()
+                        .filter(m1 -> m1.getMethod().getMethodName().contains(args[0]))
+                        .collect(Collectors.toList());
+                return x;
+            };
+            testng.setMethodInterceptor(intercept);
+        }
+        testng.run();
+        tla.getPassedTests()
+                .stream().forEach(t -> System.out.printf("Passed: %s%s%n", t.getName(),
+                List.of(t.getParameters())));
+        tla.getFailedTests()
+                .stream().forEach(t -> System.out.printf("Failed: %s%s%n", t.getName(),
+                List.of(t.getParameters())));
+    }
+}

--- a/test/jdk/java/lang/System/SetPropertiesNull.java	Fri Nov 09 10:15:43 2018 -0800
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,44 +0,0 @@
-/*
- * Copyright (c) 2014, 2018, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- */
-
-/*
- * This class tests to see if the system property java.version is properly
- * reinitialized after setting System.setProperties(null).
- *
- * @test
- * @bug 4244670 8030781
- * @summary Test for System.setProperties(null).
- */
-
-public class SetPropertiesNull {
-
-    public static void main(String args[]) {
-        final String version = System.getProperty("java.version");
-        System.setProperties(null);
-        final String newVersion = System.getProperty("java.version");
-        if (!version.equals(newVersion)) {
-            throw new RuntimeException("java.version differs: '" + version + "'  '"
-                               + newVersion + "'");
-        }
-    }
-}

--- a/test/jdk/java/util/concurrent/atomic/VMSupportsCS8.java	Fri Nov 09 10:15:43 2018 -0800
+++ b/test/jdk/java/util/concurrent/atomic/VMSupportsCS8.java	Fri Nov 09 13:28:16 2018 -0500
@@ -33,7 +33,8 @@
 
 public class VMSupportsCS8 {
     public static void main(String[] args) throws Exception {
-        if (System.getProperty("sun.cpu.isalist").matches
+        String isalist = System.getProperty("sun.cpu.isalist");
+        if (isalist != null && isalist.matches
             (".*\\b(sparcv9|pentium_pro|ia64|amd64).*")
             ||
             System.getProperty("os.arch").matches