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Privileged Actions Programming Idioms

Sample PackageAccess method implementation.

private void checkPackageAccess(Class class, ProtectionDomain domain) {
        final SecurityManager sm = System.getSecurityManager();
        if (sm != null) {
            final String classname= class.getName();
            final int i = classname.lastIndexOf('.');
            if (i != -1) {
                AccessController.doPrivileged(new PrivilegedAction<Void>() {
                    public Void run() {
                        sm.checkPackageAccess(classname.substring(0, i));
                        return null;
                }, new AccessControlContext(new ProtectionDomain[] {domain}));

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java.lang.IllegalArgumentException: Unsupported class file major version 60

- Check the stack trace and version of Java. - Update the correct Java Version to resolve the Exception.