Develop Reference

Getting java.security.AccessControlException: access denied ("java.lang.RuntimePermission" "accessClassInPackage.sun.swing") with JDK8?

I am trying to run my applet with JDK8 but i'm getting below exception on java console at this line of my code
SplitPaneH = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT);
Traces
Exception in thread "AWT-EventQueue-2" java.security.AccessControlException: access denied ("java.lang.RuntimePermission" "accessClassInPackage.sun.swing")
at java.security.AccessControlContext.checkPermission(Unknown Source)
at java.security.AccessController.checkPermission(Unknown Source)
at java.lang.SecurityManager.checkPermission(Unknown Source)
at java.lang.SecurityManager.checkPackageAccess(Unknown Source)
at sun.plugin2.applet.SecurityManagerHelper.checkPackageAccessHelper(Unknown Source)
at sun.plugin2.applet.AWTAppletSecurityManager.checkPackageAccess(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass0(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass0(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at org.jb2011.lnf.beautyeye.ch17_split.BESplitPaneDivider.<init>(BESplitPaneDivider.java:77)
at org.jb2011.lnf.beautyeye.ch17_split.BESplitPaneUI.createDefaultDivider(BESplitPaneUI.java:54)
at javax.swing.plaf.basic.BasicSplitPaneUI.installDefaults(Unknown Source)
at javax.swing.plaf.basic.BasicSplitPaneUI.installUI(Unknown Source)
at javax.swing.JComponent.setUI(Unknown Source)
at javax.swing.JSplitPane.setUI(Unknown Source)
at javax.swing.JSplitPane.updateUI(Unknown Source)
at javax.swing.JSplitPane.<init>(Unknown Source)
at javax.swing.JSplitPane.<init>(Unknown Source)
at javax.swing.JSplitPane.<init>(Unknown Source)
at TeleProvisionManager.InventoryPage.<init>(InventoryPage.java:382)
at TeleProvisionManager.MainFrame.createMainTab(MainFrame.java:2147)
at TeleProvisionManager.MainFrame.<init>(MainFrame.java:1253)
at TeleProvisionManager.LoginChangeGroupDlg.handleContinueButton(LoginChangeGroupDlg.java:791)
at TeleProvisionManager.LoginChangeGroupDlg.jbtnContinueActionPerformed(LoginChangeGroupDlg.java:489)
at TeleProvisionManager.LoginChangeGroupDlg.access$100(LoginChangeGroupDlg.java:56)
at TeleProvisionManager.LoginChangeGroupDlg$4.actionPerformed(LoginChangeGroupDlg.java:355)
at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
at javax.swing.AbstractButton.doClick(Unknown Source)
at javax.swing.plaf.basic.BasicRootPaneUI$Actions.actionPerformed(Unknown Source)
at javax.swing.SwingUtilities.notifyAction(Unknown Source)
at javax.swing.JComponent.processKeyBinding(Unknown Source)
at javax.swing.KeyboardManager.fireBinding(Unknown Source)
at javax.swing.KeyboardManager.fireKeyboardAction(Unknown Source)
at javax.swing.JComponent.processKeyBindingsForAllComponents(Unknown Source)
at javax.swing.SwingUtilities.processKeyBindings(Unknown Source)
at javax.swing.UIManager$2.postProcessKeyEvent(Unknown Source)
at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(Unknown Source)
at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(Unknown Source)
at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(Unknown Source)
at java.awt.DefaultKeyboardFocusManager.dispatchEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$500(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue$4.run(Unknown Source)
at java.awt.EventQueue$4.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
But it was worked well with JDK7. I am not getting what is the problem and how to solve it. And i tried downloading 'jsdg-stubs-jre1.5.jar' which contains sun.swing classes and copying that jar to WEB-INF/lib folder but no use. How to solve it please help me. TIA!

"accessClassInPackage.sun.swing" which signifies that in Webstart it is not allowed to use the package sun.swing.
You need to sign your applet, and with latest jdk 8 security, will block any applet signed with an untrusted certificate authority.So if you self sign this applet put low the security settings.untill it executes.
As an example here.
The thing with java 8 is that we have the security level ranging from high to very high ,while on java 7 it ranged from medium and above.The setting was only intended to block malicious or unsigned apps in java 8.However sometimes it may cause trouble with active X controls.If your app is running using low setting ,good otherwise i suggest java7, unless you dont use enhanced features like lambda expressions and other stuff

Between java7 and java8 there were a bunch of security restrictions added to the way applets are constrained in sandbox mode - especially in communicating over the network.
Check if anything here applies to your case - it may not be applicable, but these need to be checked anyway.

Can't start LibGDX Tool 2D Particle Editor

Please, help me.
I downloaded jar file from https://libgdx.badlogicgames.com/tools.html
It is runnable-2D-particles.jar
When I run it, opened the program unusable. Nope field rendering, and all the blocks are empty.
Log in console:
C:\Users\matha>java -jar C:\runnable-2D-particles.jar
java.lang.NullPointerException
at com.badlogic.gdx.backends.lwjgl.LwjglGraphics.createDisplayPixelFormat(LwjglGraphics.java:320)
at com.badlogic.gdx.backends.lwjgl.LwjglGraphics.setupDisplay(LwjglGraphics.java:214)
at com.badlogic.gdx.backends.lwjgl.LwjglCanvas.create(LwjglCanvas.java:190)
at com.badlogic.gdx.backends.lwjgl.LwjglCanvas$1.addNotify(LwjglCanvas.java:90)
at java.awt.Container.addNotify(Unknown Source)
at javax.swing.JComponent.addNotify(Unknown Source)
at java.awt.Container.addNotify(Unknown Source)
at javax.swing.JComponent.addNotify(Unknown Source)
at java.awt.Container.addNotify(Unknown Source)
at javax.swing.JComponent.addNotify(Unknown Source)
at java.awt.Container.addNotify(Unknown Source)
at javax.swing.JComponent.addNotify(Unknown Source)
at java.awt.Container.addNotify(Unknown Source)
at javax.swing.JComponent.addNotify(Unknown Source)
at java.awt.Container.addNotify(Unknown Source)
at javax.swing.JComponent.addNotify(Unknown Source)
at javax.swing.JRootPane.addNotify(Unknown Source)
at java.awt.Container.addNotify(Unknown Source)
at java.awt.Window.addNotify(Unknown Source)
at java.awt.Frame.addNotify(Unknown Source)
at java.awt.Window.show(Unknown Source)
at java.awt.Component.show(Unknown Source)
at java.awt.Component.setVisible(Unknown Source)
at java.awt.Window.setVisible(Unknown Source)
at com.badlogic.gdx.tools.particleeditor.ParticleEditor.<init>(ParticleEditor.java:92)
at com.badlogic.gdx.tools.particleeditor.ParticleEditor$6.run(ParticleEditor.java:532)
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$500(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
P.S. Video-driver installed.
How can I fix this problem?
I use WIN10, jdk1.8.0_51, jre1.8.0_60 (if it important fact)

The problem is with OpenGL, because at com.badlogic.gdx.backends.lwjgl.LwjglGraphics.createDisplayPixelFormat(LwjglGrap‌​hics.java:320) line 320 in LwjglGraphics says OpenGL is not supported by the video driver. So you should check that your card supports at least OpenGL 1.5, and if so update your video card drivers.

How to prevent "the application has requested permission to establish connections" popups? [duplicate]

Since Java 7 Update 5 my Java Web Start application is requesting the permission to establish connections. The application is signed with a valid certificate.
A popup is displayed with the following text:
The application has requested permission to establish connections to
www.example.com. Do you want to allow this action? [OK] [Cancel]
On rejecting the request I get this trace on the console:
Uncaught error fetching image:
java.lang.SecurityException
at java.lang.SecurityManager.checkPermission(Unknown Source)
at java.lang.SecurityManager.checkConnect(Unknown Source)
at com.sun.javaws.security.JavaWebStartSecurity.checkConnect(Unknown Source)
at sun.awt.image.URLImageSource.checkSecurity(Unknown Source)
at sun.awt.image.ImageRepresentation.imageComplete(Unknown Source)
at sun.awt.image.InputStreamImageSource.errorConsumer(Unknown Source)
at sun.awt.image.InputStreamImageSource.setDecoder(Unknown Source)
at sun.awt.image.InputStreamImageSource.doFetch(Unknown Source)
at sun.awt.image.ImageFetcher.fetchloop(Unknown Source)
at sun.awt.image.ImageFetcher.run(Unknown Source)
And here is the thread dump when the permission is requested:
"Image Fetcher 2" daemon prio=8 tid=0x04198000 nid=0xc24 in Object.wait() [0x0470e000]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x1d67b050> (a java.lang.Object)
at java.lang.Object.wait(Object.java:503)
at com.sun.javaws.ui.JavawsSysRun.delegate(Unknown Source)
- locked <0x1d67b050> (a java.lang.Object)
at com.sun.deploy.util.DeploySysRun.execute(Unknown Source)
at com.sun.deploy.util.DeploySysRun$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.deploy.util.DeploySysRun.executePrivileged(Unknown Source)
at com.sun.deploy.ui.UIFactory.showApiDialog(Unknown Source)
at com.sun.deploy.uitoolkit.impl.awt.ui.UIFactoryImpl.showMessageDialog(Unknown Source)
at com.sun.deploy.uitoolkit.impl.awt.ui.UIFactoryImpl.showMessageDialog(Unknown Source)
at com.sun.jnlp.ApiDialog.askUser(Unknown Source)
at com.sun.jnlp.ApiDialog.askUser(Unknown Source)
at com.sun.jnlp.ApiDialog.askConnect(Unknown Source)
at com.sun.javaws.security.JavaWebStartSecurity.checkConnect(Unknown Source)
at java.net.InetAddress.getAllByName0(Unknown Source)
at java.net.InetAddress.getAllByName(Unknown Source)
at java.net.InetAddress.getByName(Unknown Source)
at sun.reflect.GeneratedMethodAccessor3.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.sun.deploy.cache.Cache.getCurrentIP(Unknown Source)
at com.sun.deploy.cache.Cache.isCacheEntryIPValid(Unknown Source)
at com.sun.deploy.cache.Cache.getCacheEntryFromIdxFiles(Unknown Source)
at com.sun.deploy.cache.Cache.getCacheEntry(Unknown Source)
at com.sun.deploy.cache.Cache.getCacheEntry(Unknown Source)
at com.sun.deploy.cache.Cache.getCacheEntry(Unknown Source)
at com.sun.deploy.net.DownloadEngine.isUpdateAvailable(Unknown Source)
at com.sun.deploy.cache.DeployCacheHandler.get(Unknown Source)
- locked <0x12fd06d0> (a java.lang.Object)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.connect(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.followRedirect(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
- locked <0x12fd0728> (a sun.net.www.protocol.http.HttpURLConnection)
at com.sun.deploy.net.CrossDomainXML.check(Unknown Source)
at com.sun.deploy.net.CrossDomainXML.check(Unknown Source)
- locked <0x1d6fcf40> (a java.lang.Class for com.sun.deploy.net.CrossDomainXML)
at com.sun.javaws.security.JavaWebStartSecurity.checkConnect(Unknown Source)
at sun.net.www.http.HttpClient.openServer(Unknown Source)
- locked <0x12fd09b8> (a sun.net.www.http.HttpClient)
at sun.net.www.http.HttpClient.<init>(Unknown Source)
at sun.net.www.http.HttpClient.New(Unknown Source)
at sun.net.www.http.HttpClient.New(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.connect(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
- locked <0x12fd0a40> (a sun.net.www.protocol.http.HttpURLConnection)
at com.sun.org.apache.xerces.internal.impl.XMLEntityManager.setupCurrentEntity(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLEntityManager.startEntity(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLEntityManager.startDTDEntity(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDTDScannerImpl.setInputSource(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$DTDDriver.dispatch(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$DTDDriver.next(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$PrologDriver.next(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl.parse(Unknown Source)
at javax.xml.parsers.SAXParser.parse(Unknown Source)
at com.sun.deploy.net.CrossDomainXML$2.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.deploy.net.CrossDomainXML.check(Unknown Source)
at com.sun.deploy.net.CrossDomainXML.check(Unknown Source)
- locked <0x1d6fcf40> (a java.lang.Class for com.sun.deploy.net.CrossDomainXML)
at com.sun.javaws.security.JavaWebStartSecurity.checkConnect(Unknown Source)
at sun.awt.image.URLImageSource.checkSecurity(Unknown Source)
at sun.awt.image.InputStreamImageSource.setDecoder(Unknown Source)
at sun.awt.image.InputStreamImageSource.doFetch(Unknown Source)
at sun.awt.image.ImageFetcher.fetchloop(Unknown Source)
at sun.awt.image.ImageFetcher.run(Unknown Source)
"AWT-EventQueue-0" prio=6 tid=0x0315f800 nid=0xc80 waiting on condition [0x037cf000]
java.lang.Thread.State: WAITING (parking)
at sun.misc.Unsafe.park(Native Method)
- parking to wait for <0x1d6b46a8> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
at java.util.concurrent.locks.LockSupport.park(Unknown Source)
at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(Unknown Source)
at java.awt.EventQueue.getNextEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
"javawsApplicationMain" prio=6 tid=0x040b4c00 nid=0x1198 in Object.wait() [0x0461f000]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x1db95260> (a java.awt.MediaTracker)
at java.awt.MediaTracker.waitForID(Unknown Source)
- locked <0x1db95260> (a java.awt.MediaTracker)
at javax.swing.ImageIcon.loadImage(Unknown Source)
- locked <0x1db95260> (a java.awt.MediaTracker)
at javax.swing.ImageIcon.<init>(Unknown Source)
at javax.swing.ImageIcon.<init>(Unknown Source)
at com.mycompany.myapp.j.c(Unknown Source)
at com.mycompany.myapp.j.<init>(Unknown Source)
at com.mycompany.myapp.MainClass.main(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.sun.javaws.Launcher.executeApplication(Unknown Source)
at com.sun.javaws.Launcher.executeMainClass(Unknown Source)
at com.sun.javaws.Launcher.doLaunchApp(Unknown Source)
at com.sun.javaws.Launcher.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
"CacheCleanUpThread" daemon prio=6 tid=0x03232800 nid=0x1048 waiting for monitor entry [0x0390f000]
java.lang.Thread.State: BLOCKED (on object monitor)
at com.sun.deploy.net.CrossDomainXML.quickCheck(Unknown Source)
- waiting to lock <0x1d6fcf40> (a java.lang.Class for com.sun.deploy.net.CrossDomainXML)
at com.sun.javaws.security.JavaWebStartSecurity.checkConnect(Unknown Source)
at java.net.InetAddress.getAllByName0(Unknown Source)
at java.net.InetAddress.getAllByName(Unknown Source)
at java.net.InetAddress.getByName(Unknown Source)
at sun.reflect.GeneratedMethodAccessor3.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.sun.deploy.cache.Cache.getCurrentIP(Unknown Source)
at com.sun.deploy.cache.Cache.isCacheEntryIPValid(Unknown Source)
at com.sun.deploy.cache.Cache.getCacheEntryFromFile(Unknown Source)
at com.sun.deploy.cache.Cache.getCacheEntryFromFile(Unknown Source)
at com.sun.deploy.cache.CleanupThread.getCurrentCacheSize(Unknown Source)
at com.sun.deploy.cache.CleanupThread.run(Unknown Source)
- locked <0x1d6b5518> (a java.lang.Object)
"Javaws Secure Thread" daemon prio=6 tid=0x03158c00 nid=0xb9c in Object.wait() [0x0377f000]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x12fd1e58> (a java.awt.EventQueue$1AWTInvocationLock)
at java.lang.Object.wait(Object.java:503)
at java.awt.EventQueue.invokeAndWait(Unknown Source)
- locked <0x12fd1e58> (a java.awt.EventQueue$1AWTInvocationLock)
at javax.swing.SwingUtilities.invokeAndWait(Unknown Source)
at com.sun.deploy.ui.DialogTemplate.setVisible(Unknown Source)
at com.sun.deploy.ui.UIFactory$10.execute(Unknown Source)
at com.sun.javaws.ui.JavawsSysRun$SecureThread.doWork(Unknown Source)
at com.sun.javaws.ui.JavawsSysRun$SecureThread.run(Unknown Source)
- locked <0x1d67b050> (a java.lang.Object)
The application consists in a welcome screen that fetches images from a website, this screen is then dismissed and the main application window appears. The warning is displayed only before the welcome screen appears. Once the application is started no other warning is displayed despite several connections initiated by the application.
What is causing this issue? Is this a regression in Java 7u5 or a new feature? I haven't seen any reference to this in the release notes.
Thank you

We're running into this as well combined with the security popup sometimes causing a deadlock. (due to other webstart bugs). This is most likely due to the 'fix' for 7177094 in 7u5 from the release notes. I tried to but this comment on your bug # 7177349, but comments on it were not available.

java.security.AccessControlException: access denied ("java.util.PropertyPermission" "jna.boot.library.path" "read")

I am having some trouble running my signed web applet,
it runs fine within Eclipse, but as soon as I upload to the webpage, I get this error log:
Exception in thread "AWT-EventQueue-2" java.lang.ExceptionInInitializerError
at com.dermalog.imaging.capturing.cwrap.vc.DermalogvcLibrary.<clinit>(DermalogvcLibrary.java:30)
at com.dermalog.imaging.capturing.DeviceManager.<clinit>(DeviceManager.java:33)
at MyPackage.Bio.GetDevice(Bio.java:218)
at MyPackage.Bio.StartDevice(Bio.java:150)
at MyPackage.Bio.access$0(Bio.java:144)
at MyPackage.Bio$1.run(Bio.java:80)
at java.security.AccessController.doPrivileged(Native Method)
at MyPackage.Bio.<init>(Bio.java:76)
at MyPackage.Test$2.actionPerformed(Test.java:45)
at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)
at java.awt.Component.processMouseEvent(Unknown Source)
at javax.swing.JComponent.processMouseEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$200(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue$4.run(Unknown Source)
at java.awt.EventQueue$4.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
Caused by: java.security.AccessControlException: access denied("java.util.PropertyPermission" "jna.boot.library.path" "read")
at java.security.AccessControlContext.checkPermission(Unknown Source)
at java.security.AccessController.checkPermission(Unknown Source)
at java.lang.SecurityManager.checkPermission(Unknown Source)
at java.lang.SecurityManager.checkPropertyAccess(Unknown Source)
at java.lang.System.getProperty(Unknown Source)
at com.sun.jna.Native.loadNativeLibrary(Native.java:650)
at com.sun.jna.Native.<clinit>(Native.java:109)
... 44 more
I believe this is a problem with breaking out of the sandbox, and communicating with the computer.
Can using AccessController.doPrivileged solve the problem? What are my options other than modifying the policy file?

It turns out, the problem I had, was that my referenced Jar files (outside the main Jar) was not signed, and after signing them the problem went away.

Problems in running I/O in EDT of applet

Our applet source code is kind of spaghetti (written in 2000, Java 1.3 then) and we want to recompile it to Java 1.6 or 1.7.
When I'm testing it, most of the Swing is OK but after sometime, an Exception occurred, which is EDT exception. Specifically, when a drag event is done, a series of EDT exceptions appear.
Is this something to with coding the I/O part in ActionListeners because I've read that it is bad to code I/O operations in action listeners, which EDT executes when a action is performed.
EDIT:
This is the recurring exception
Exception in thread "AWT-EventQueue-3" java.lang.NullPointerException
at javax.swing.BufferStrategyPaintManager.flushAccumulatedRegion(Unknown Source)
at javax.swing.BufferStrategyPaintManager.copyArea(Unknown Source)
at javax.swing.RepaintManager.copyArea(Unknown Source)
at javax.swing.JViewport.blitDoubleBuffered(Unknown Source)
at javax.swing.JViewport.windowBlitPaint(Unknown Source)
at javax.swing.JViewport.setViewPosition(Unknown Source)
at javax.swing.plaf.basic.BasicScrollPaneUI$Handler.vsbStateChanged(Unknown Source)
at javax.swing.plaf.basic.BasicScrollPaneUI$Handler.stateChanged(Unknown Source)
at javax.swing.DefaultBoundedRangeModel.fireStateChanged(Unknown Source)
at javax.swing.DefaultBoundedRangeModel.setRangeProperties(Unknown Source)
at javax.swing.DefaultBoundedRangeModel.setValue(Unknown Source)
at javax.swing.JScrollBar.setValue(Unknown Source)
at javax.swing.plaf.basic.BasicScrollBarUI$TrackListener.setValueFrom(Unknown Source)
at javax.swing.plaf.basic.BasicScrollBarUI$TrackListener.mouseDragged(Unknown Source)
at java.awt.Component.processMouseMotionEvent(Unknown Source)
at javax.swing.JComponent.processMouseMotionEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$000(Unknown Source)
at java.awt.EventQueue$1.run(Unknown Source)
at java.awt.EventQueue$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext$1.doIntersectionPrivilege(Unknown Source)
at java.security.AccessControlContext$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue$2.run(Unknown Source)
at java.awt.EventQueue$2.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)

I guess it has something to do with the version of java plugin.
In java 1.6_10, a new version of this plugin is release, i just disabled the option in java found in control panel
Advance->Java Plug In ->Enable the next generation Java Plug in
When i disable this, this recurring error with no distinct behavior no longer appears.
I guess also it has something to do with our code written in the days of Java 1.3.