YAML order

I want to order by keys in config.yml.
Right now, Im doing this:

boolean KEY1 = true, KEY2 = true;
config.load();
KEY1 = getConfiguration().getBoolean("KEY1", KEY1);
KEY2 = getConfiguration().getBoolean("KEY2", KEY2);
config.setProperty("KEY1", KEY1);
config.setProperty("KEY2", KEY2);
config.save();

But that outputs the keys in a random order.
How do I control this?

Another thing, is it possible to make comments?
Something like: config.createComment("Derp");

 

This is an old post, but I want to do the same thing.

I'm probably gonna prep-end every key/value set by their index.

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

You can now make a config.yml, compile it into your Jar with everything else, then use saveDefaultConfig() to have it pulled out and saved exactly how you originally created it.