What you are really trying to ask perhaps is:

1. What is -D xyz=123?
2. What is -cp?

Answers:

1. The -D parameter is setting a system property for the Java session, which is why you see so many -D parameters in your command.
2. The -cp paramter is simply declaring your Class path, which is where the Java session will expect to find all of the classes used by your Java program.