With Java 7 Update 45, the System Properties no Longer Set from JNLP Tag “Property”

We experienced the same Problem with Java 7 Update 45 (1.7.0_45). The JNLP Spec gave a hint for a work-around: Properties set in the jnlp file will normally be set by Java Web Start after the VM is started but before the application is invoked. Some properties are considered “secure” properties and can be passed … Read more

get unique machine id

Maybe the easiest way is. Get the DeviceId Nuget package And use it like string deviceId = new DeviceIdBuilder() .AddMachineName() .AddMacAddress() .AddProcessorId() .AddMotherboardSerialNumber() .ToString(); You can personalize the info used to generate the ID Github Project

Difference between a “coroutine” and a “thread”?

First read: Concurrency vs Parallelism – What is the difference? Concurrency is the separation of tasks to provide interleaved execution. Parallelism is the simultaneous execution of multiple pieces of work in order to increase speed. —https://github.com/servo/servo/wiki/Design Short answer: With threads, the operating system switches running threads preemptively according to its scheduler, which is an algorithm … Read more

how to detect operating system language (locale) from java code

The Windows XP systeminfo command displays lots of stuff, but the relevant information is this: System Locale: en-us;English (United States) Input Locale: en-us;English (United States) To get equivalent information in Java, use Locale.getDefault() to get the Locale that Java is using, and use methods on the Locale object such as getCountry(), getLanguage() to get details. … Read more

Can’t apply system screen brightness programmatically in Android

OK, found the answer here: Refreshing the display from a widget? Basically, have to make a transparent activity that processes the brightness change. What’s not mentioned in the post is that you have to do: Settings.System.putInt(y.getContentResolver(),Settings.System.SCREEN_BRIGHTNESS_MODE, 0); Settings.System.putInt(y.getContentResolver(),Settings.System.SCREEN_BRIGHTNESS, brightnessLevel); then do WindowManager.LayoutParams lp = getWindow().getAttributes(); lp.screenBrightness = brightness; getWindow().setAttributes(lp); And if you call finish() right … Read more

cannot convert ‘std::basic_string’ to ‘const char*’ for argument ‘1’ to ‘int system(const char*)’

The type of expression ” quickscan.exe resolution 300 selectscanner jpg showui showprogress filename ‘”+name+”.jpg'” is std::string. However function system has declaration int system(const char *s); that is it accepts an argumnet of type const char * There is no conversion operator that would convert implicitly an object of type std::string to object of type const … Read more