If I set a system property with -D can I access it from my code?

Question

I'd like to be able to set a property on the JVM using the -D switch. If I do that, can I access it from my code? If yes, how?

Answer 1

Use System.getProperty("mykey");

Answer 2

Apart from System.getProperty, there's also Integer.getInteger and Boolean.getBoolean, if you want to get an integral or boolean value instead. :-)