Java数据库显示国家数据库表中的所有国家/地区信

I am working on a Java assignment that requires to change the Country class so it prints every Country from a Country Database Table, not just one Country. I've tried various instances but cannot get it to display all them. I'm very new to Java so I know that I'm messing up the syntax somehow, or it's blatantly in front of my face and I've just been working on this for too long and need another set of eyes. Here is what I have so far to display one Country from the Country Table.I am working on a Java assignment that requires