How did Jews survive living in Denmark during World War 2?

the danish resistance helped the Jewish people by helping them find food they might go fishing for them, in ww2 they helped them by helping them get to Sweden where the Germans had not yet taken over. a specific book called number the stars" shows the story of a little girl and her family helping the Jews escape from the Germans who were hunting them down and sending them to concentration camps where they would die of starvation or get killed with acid or gas in supposedly showers.