FULL PRODUCT VERSION :
Java Web Start 12.0.0.0
Using JRE version 9+181 Java HotSpot(TM) 64-Bit Server VM
JRE expiration date: 3.2.2018 0.00

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows [Version 6.1.7601]

A DESCRIPTION OF THE PROBLEM :
When calling the openFileDialog method on FileOpenService, a security exception is thrown and the file dialog does not open

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Get the FileOpenService from the ServiceManager and try to call the openFileDialog method


EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
File dialog opens
ACTUAL -
File dialog does not open

ERROR MESSAGES/STACK TRACES THAT OCCUR :
Commence loading file
Looking up FileOpenService
javax.jnlp.BasicService
javax.jnlp.FileOpenService
javax.jnlp.FileSaveService
javax.jnlp.DownloadService
javax.jnlp.ClipboardService
javax.jnlp.PersistenceService
javax.jnlp.PrintService
javax.jnlp.ExtendedService
javax.jnlp.SingleInstanceService
Opening dialog
java.security.AccessControlException: access denied ("java.lang.RuntimePermission" "accessClassInPackage.com.sun.java.swing.plaf.windows")
at java.base/java.security.AccessControlContext.checkPermission(Unknown Source)
at java.base/java.security.AccessController.checkPermission(Unknown Source)
at java.base/java.lang.SecurityManager.checkPermission(Unknown Source)
at jdk.javaws@9/com.sun.javaws.security.JavaWebStartSecurity.checkPermission(Unknown Source)
at java.base/java.lang.SecurityManager.checkPackageAccess(Unknown Source)
at java.base/sun.reflect.misc.ReflectUtil.checkPackageAccess(Unknown Source)
at java.desktop/javax.swing.UIDefaults.getUIClass(Unknown Source)
at java.desktop/javax.swing.UIDefaults.getUI(Unknown Source)
at java.desktop/javax.swing.UIManager.getUI(Unknown Source)
at java.desktop/javax.swing.JRootPane.updateUI(Unknown Source)
at java.desktop/javax.swing.JRootPane.<init>(Unknown Source)
at java.desktop/javax.swing.JDialog.createRootPane(Unknown Source)
at java.desktop/javax.swing.JDialog.dialogInit(Unknown Source)
at java.desktop/javax.swing.JDialog.<init>(Unknown Source)
at java.desktop/javax.swing.JDialog.<init>(Unknown Source)
at jdk.javaws@9/com.sun.javaws.ui.JavawsSysRun$DummyDialog.<init>(Unknown Source)
at jdk.javaws@9/com.sun.javaws.ui.JavawsSysRun.delegateFromEDT(Unknown Source)
at jdk.javaws@9/com.sun.javaws.ui.JavawsSysRun.delegate(Unknown Source)
at jdk.deploy@9/com.sun.deploy.util.DeploySysRun.execute(Unknown Source)
at jdk.deploy@9/com.sun.deploy.util.DeploySysRun$2.run(Unknown Source)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at jdk.deploy@9/com.sun.deploy.util.DeploySysRun.executePrivileged(Unknown Source)
at jdk.javaws@9/com.sun.jnlp.FileOpenServiceImpl$3.run(Unknown Source)
at jdk.deploy@9/com.sun.deploy.util.Waiter$1.wait(Unknown Source)
at jdk.deploy@9/com.sun.deploy.util.Waiter.runAndWait(Unknown Source)
at jdk.javaws@9/com.sun.jnlp.FileOpenServiceImpl.openFileDialog(Unknown Source)
at com.oilon.common.ui.MainWindow.loadFile(MainWindow.java:522)
at com.oilon.common.ui.MainWindow.access$12(MainWindow.java:494)
at com.oilon.common.ui.MainWindow$6.actionPerformed(MainWindow.java:252)
at java.desktop/javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
at java.desktop/javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
at java.desktop/javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
at java.desktop/javax.swing.DefaultButtonModel.setPressed(Unknown Source)
at java.desktop/javax.swing.AbstractButton.doClick(Unknown Source)
at java.desktop/javax.swing.plaf.basic.BasicMenuItemUI.doClick(Unknown Source)
at java.desktop/javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(Unknown Source)
at java.desktop/java.awt.Component.processMouseEvent(Unknown Source)
at java.desktop/javax.swing.JComponent.processMouseEvent(Unknown Source)
at java.desktop/java.awt.Component.processEvent(Unknown Source)
at java.desktop/java.awt.Container.processEvent(Unknown Source)
at java.desktop/java.awt.Component.dispatchEventImpl(Unknown Source)
at java.desktop/java.awt.Container.dispatchEventImpl(Unknown Source)
at java.desktop/java.awt.Component.dispatchEvent(Unknown Source)
at java.desktop/java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
at java.desktop/java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
at java.desktop/java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
at java.desktop/java.awt.Container.dispatchEventImpl(Unknown Source)
at java.desktop/java.awt.Window.dispatchEventImpl(Unknown Source)
at java.desktop/java.awt.Component.dispatchEvent(Unknown Source)
at java.desktop/java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.desktop/java.awt.EventQueue.access$500(Unknown Source)
at java.desktop/java.awt.EventQueue$3.run(Unknown Source)
at java.desktop/java.awt.EventQueue$3.run(Unknown Source)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
at java.desktop/java.awt.EventQueue$4.run(Unknown Source)
at java.desktop/java.awt.EventQueue$4.run(Unknown Source)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
at java.desktop/java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.desktop/java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.desktop/java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.desktop/java.awt.EventDispatchThread.run(Unknown Source)
Got file contents?

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
private void loadFile(String path) {
//ObjectInputStream restore = null;
ObjectInputStream restore = null;
FileOpenService fos = null;
        FileContents fileContents = null;

        if (DEBUG) {
     System.out.println("Commence loading file");
     }
        // if file path not specified -> ask for it
        if (path == null) {
         if (DEBUG) {
         System.out.println("Looking up FileOpenService");
         }
         for (String str : ServiceManager.getServiceNames())
         System.out.println(str);
try {
fos = (FileOpenService)ServiceManager.lookup("javax.jnlp.FileOpenService");
} catch (UnavailableServiceException exc) {
exc.printStackTrace();
         }

if (DEBUG) {
         System.out.println("Opening dialog");
         }

if (fos != null) {
try {
fileContents = fos.openFileDialog(null, new String[] { "shp"});
} catch (Exception exc) {
exc.printStackTrace();
}
} else {
if (DEBUG) {
System.out.println("Something went wrong when loading");
}
}

if (DEBUG) {
         System.out.println("Got file contents?");
         }
if (fileContents == null)
return;
        }
}
---------- END SOURCE ----------