How to install Minecraft Maps on Java Edition

Since there hasn't been a proper floating island survival map since the creator of Skylands stopped updating it, I decided to make a, newer, bigger and better floating island survival map for the community. The map is still in heavy development and currently features:

- Indev-like floating silands

- Beta sky dimension-like floating islands

- A forest biome

- A jungle biome

- A small village

- Two dungeons

- Caves

- Treasures

- Secrets

- Etc.

Additional Notes

One of the dungeons is in a windmill. It's original creator is

OmGitzJeff17

and it cen be found here:

http://www.planetminecraft.com/project/dutchinspired-windmill/