The injected extra java file is executed regardless it is not signed. (It is running in sandboxed mode anyway)

net.sourceforge.jnlp.LaunchException: Fatal: Launch Error: Could not launch JNLP file. The application has not been initialized, for more information execute javaws/browser from the command line and send a bug report.     at net.sourceforge.jnlp.Launcher.launchApplication(Launcher.java:582)     at net.sourceforge.jnlp.Launcher$TgThread.run(Launcher.java:945) Caused by: java.lang.reflect.InvocationTargetException     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)     at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)     at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)     at java.lang.reflect.Method.invoke(Unknown Source)     at net.sourceforge.jnlp.Launcher.launchApplication(Launcher.java:576)     ... 1 more Caused by: java.security.AccessControlException: access denied ("java.io.FilePermission" "dashie.txt" "write")     at java.security.AccessControlContext.checkPermission(Unknown Source)     at java.security.AccessController.checkPermission(Unknown Source)     at java.lang.SecurityManager.checkPermission(Unknown Source)     at net.sourceforge.jnlp.runtime.JNLPSecurityManager.checkPermission(JNLPSecurityManager.java:292)     at java.lang.SecurityManager.checkWrite(Unknown Source)     at sun.nio.fs.WindowsChannelFactory.open(Unknown Source)     at sun.nio.fs.WindowsChannelFactory.newFileChannel(Unknown Source)     at sun.nio.fs.WindowsFileSystemProvider.newByteChannel(Unknown Source)     at java.nio.file.spi.FileSystemProvider.newOutputStream(Unknown Source)     at java.nio.file.Files.newOutputStream(Unknown Source)     at java.nio.file.Files.write(Unknown Source)     at META-INF.Test.main(Test.java:14)     ... 6 more 
net.sourceforge.jnlp.LaunchException: Fatal: Launch Error: Could not launch JNLP file. The application has not been initialized, for more information execute javaws/browser from the command line and send a bug report.     at net.sourceforge.jnlp.Launcher.launchApplication(Launcher.java:582)     at net.sourceforge.jnlp.Launcher$TgThread.run(Launcher.java:945) Caused by: java.lang.reflect.InvocationTargetException     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 net.sourceforge.jnlp.Launcher.launchApplication(Launcher.java:576)     ... 1 more Caused by: java.security.AccessControlException: access denied ("java.io.FilePermission" "dashie.txt" "write")     at java.security.AccessControlContext.checkPermission(Unknown Source)     at java.security.AccessController.checkPermission(Unknown Source)     at java.lang.SecurityManager.checkPermission(Unknown Source)     at net.sourceforge.jnlp.runtime.JNLPSecurityManager.checkPermission(JNLPSecurityManager.java:292)     at java.lang.SecurityManager.checkWrite(Unknown Source)     at sun.nio.fs.WindowsChannelFactory.open(Unknown Source)     at sun.nio.fs.WindowsChannelFactory.newFileChannel(Unknown Source)     at sun.nio.fs.WindowsFileSystemProvider.newByteChannel(Unknown Source)     at java.nio.file.spi.FileSystemProvider.newOutputStream(Unknown Source)     at java.nio.file.Files.newOutputStream(Unknown Source)     at java.nio.file.Files.write(Unknown Source)     at META-INF.Test.main(Test.java:14)     ... 6 more 
netx: Launch Error: Could not launch JNLP file. ( (access denied ("java.io.FilePermission" "dashie.txt" "write")))
Denying permission: ("java.io.FilePermission" "dashie.txt" "write")
hello 
Invoking main() with args: []
Setting net.sourceforge.jnlp.runtime.JNLPClassLoader@14fd2b28 as the classloader for thread TimerQueue
Setting net.sourceforge.jnlp.runtime.JNLPClassLoader@14fd2b28 as the classloader for thread Thread-4
Setting net.sourceforge.jnlp.runtime.JNLPClassLoader@14fd2b28 as the classloader for thread AWT-EventQueue-1
Setting net.sourceforge.jnlp.runtime.JNLPClassLoader@14fd2b28 as the classloader for thread 1965



net.sourceforge.jnlp.LaunchException: Fatal: Launch Error: Could not launch JNLP file. The application has not been initialized, for more information execute javaws/browser from the command line and send a bug report.
        at net.sourceforge.jnlp.Launcher.launchApplication(Launcher.java:582)
        at net.sourceforge.jnlp.Launcher$TgThread.run(Launcher.java:945)
Caused by: java.lang.reflect.InvocationTargetException
        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 net.sourceforge.jnlp.Launcher.launchApplication(Launcher.java:576)
        ... 1 more
Caused by: java.security.AccessControlException: access denied ("java.io.FilePermission" "dashie.txt" "write")
        at java.security.AccessControlContext.checkPermission(Unknown Source)
        at java.security.AccessController.checkPermission(Unknown Source)
        at java.lang.SecurityManager.checkPermission(Unknown Source)
        at net.sourceforge.jnlp.runtime.JNLPSecurityManager.checkPermission(JNLPSecurityManager.java:292)
        at java.lang.SecurityManager.checkWrite(Unknown Source)
        at sun.nio.fs.WindowsChannelFactory.open(Unknown Source)
        at sun.nio.fs.WindowsChannelFactory.newFileChannel(Unknown Source)
        at sun.nio.fs.WindowsFileSystemProvider.newByteChannel(Unknown Source)
        at java.nio.file.spi.FileSystemProvider.newOutputStream(Unknown Source)
        at java.nio.file.Files.newOutputStream(Unknown Source)
        at java.nio.file.Files.write(Unknown Source)
        at META-INF.Test.main(Test.java:14)
        ... 6 more
		