Orsi, I registered especially after years out in the lurking wilderness to reply to your last post. If you're learning Java as your first language, knowing what the main(String[] args) part of your very first program means honestly isn't essential. It could even be off-putting. As it says
here, that snippet of code is just something that all Java applications require to run. At this stage, just know that it has to be there or follow the link for a little more information.
Hope that helped some.