For some time now, installing/updating Java prompts you to install the Ask.com toolbar and search page. After installation, this is offered each time you install a new update of Java, which can be very annoying. A somewhat undocumented feature is that you can disable these offers from the Java Control Panel, preventing future updates from prompting you to install this thing.
For debugging purposes, I often prematurely abort a function by adding a return statement in the middle of it. With most compilers this works flawlessly, accept with Java...
The Java compiler bums out with an unreachable statement error, and won't allow you to compile a class until all code is reachable within a function.
Luckily, you can trick the compiler by adding an if-statement that's always true:
if (1==1) return;
This way, as the return is supposedly conditional, and the compiler doesn't consider the result of an if-statement, it is tricked into believing the following code is still reachable.
A nice article about how to set up NIS on Red Hat linux: http://bradthemad.org/tech/notes/redhat_nis_setup.php.
When attempting to log on with a domain account on a computer joined to a domain that has both 2012R2 and 2003 domain controllers, you may encounter the following error:
Additionally, an Event ID 4 on Source: Kerberos is logged. You can only log on using local accounts.
Mixed 2012R2 and 2003 AD environments require hotfix 2989971 to be installed on every 2012R2 DC. See the KB for a full explanation.
The hotfix requires Update 1 (2919355) to be installed first. The hotfix is also included in update rollup 2984006.
MSDN has great documentation about Failover Clusters, including a handy checklist for implementing cluster roles, such as:
Preferred:
String x = JComboBox.getSelectedItem().toString();
or
String x = String.valueOf(JComboBox.getSelectedItem());
The second method protects against null values as well.
Avoid using casting:
String x = (String)JComboBox.getSelectedItem();
This would work fine if the item is indeed a string, but will fail if it can (also) be any other data type. To be safe, use either of the first two methods.
By default, it is not possible to specify passwords (the SecureString type) directly as a plain-text cmdlet parameter because it is unsecure to do so (and they are right). But sometimes, there's no other way to run a cmdlet without specifying the password as plain text as a cmdlet parameter. Luckily, there's an easy workaround by performing a conversion from plain text and store the password in a SecureString object.
$pw = ConvertTo-SecureString -String "your-pw" -AsPlainText -Force
You can then use the $pw object to specify the password in a cmdlet.
For example: resetting the password of an AD account:
Set-ADAccountPassword -Identity my-account -NewPassword $pw
If, when attempting to start SQL Server instance, you get an error 1814, this means there's a problem with the tempdb database. Either it can't be created because the disk or volume is not accessible for writing (i.e. a security permission problem), or the volume on which the tempdb resides does not have enough space available. If the latter is the problem, you'll need at least 2 MB of free space for tempdb to be created.
Cisco AnyConnect VPN client may fail on Windows 7 for no apparent reason with the following error:
A possible reason may be that Internet Connection Sharing has been enabled on one or more network interfaces (e.g. used for making a hotspot out of your laptop). Try disabling ICS, then try connecting again.
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