What punishments do other countries give to someone that enters their country Illegally?

It seems that we have many laws in place for the common good of the majority. These laws were written, proposed and voted on by the people we elect to represent us, so why is OK to break the law here? How do other countries deal with people that illegally enter their border? Would you expect to be punished if you illegally enter another country, like Hungary, China, Italy?