Is there a way to know if a Java program was started from the command line or from a jar file?

Question

I want to either display a message in the console or a pop up, so in case a parameter is not specified, I want to know to which should I display

Something like:

Answer 1

From http://java.itags.org/java-essentials/15972/

try {
    GraphicsEnvironment.getLocalGraphicsEnvironment();
} catch(Throwable ex) {
    System.out.println("No graphical environment is available.");
}