Scalar i6000 – Connect to the Webinterface

I got issues connecting to the Webinteface of our Scalar i6000.

Its java based and the problem is that it is designed for java version 1.6.

That means that if your’e using lets say java 1.8, there will be errors that prevents the execution of the applet.

So i found out that there are two main problems:


java.lang.ExceptionInInitializerError
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at java.lang.Class.newInstance(Class.java:442)
at sun.applet.AppletPanel.createApplet(AppletPanel.java:799)
at sun.applet.AppletPanel.runLoader(AppletPanel.java:728)
at sun.applet.AppletPanel.run(AppletPanel.java:378)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.security.AccessControlException: access denied ("java.util.PropertyPermission" "user.home" "read")
at java.security.AccessControlContext.checkPermission(AccessControlContext.java:472)
at java.security.AccessController.checkPermission(AccessController.java:884)
at java.lang.SecurityManager.checkPermission(SecurityManager.java:549)
at java.lang.SecurityManager.checkPropertyAccess(SecurityManager.java:1294)
at java.lang.System.getProperty(System.java:717)
at com.adic.amc.lm.client.LM3Applet.(LM3Applet.java:35)
... 9 more


java.security.AccessControlException: access denied ("java.security.SecurityPermission" "setProperty.networkaddress.cache.ttl")
at java.security.AccessControlContext.checkPermission(AccessControlContext.java:472)
at java.security.AccessController.checkPermission(AccessController.java:884)
at java.lang.SecurityManager.checkPermission(SecurityManager.java:549)
at java.lang.SecurityManager.checkSecurityAccess(SecurityManager.java:1759)
at java.security.Security.check(Security.java:854)
at java.security.Security.setProperty(Security.java:792)
at com.adic.amc.lm.client.LM3Applet.init(LM3Applet.java:57)
at sun.applet.AppletPanel.run(AppletPanel.java:434)
at java.lang.Thread.run(Thread.java:748)

You see java has a problem with AccessControl of
“java.util.PropertyPermission” “user.home” “read”
and “java.security.SecurityPermission” “setProperty.networkaddress.cache.ttl”

The solution is pretty simple.

Java has a file in which permissions are controlled. In my system (archlinux), its located here:

/etc/java-jdk8/security/java.policy

Maybe in your system the file can be located otherwhere, so just use find oder locate.

I made two entrys in the grant-section in it:

grant {
...
permission java.util.PropertyPermission "user.home", "read";
permission java.security.AllPermission;
...
}

The the applet loads and you dont have to install a old java version 🙂

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