Peaceful mode

# Determines if peaceful mode should be active, i.e. enemies do not attack (unless provoked)

Settings_PeacefulMode=False

Hi Chassy you can do that at the start right after you have created your new world you will see 5 different boxes, the last one "Animals" just deselect all the animals / monsters that you don't want to have, or just turn on peaceful mode in the settings.

Both the Java Version and the new version indeed have a peaceful mode setting In singleplayer, you can enable it in the settings menu (at the top of the "Miscellaneous" settings). It can be enabled/disabled at any time.

If peaceful mode is enabled, npcs won't attack you (unless you attack them first).

However, if you don't want certain animals or npcs to show up in your world at all, you can disable them when creating a world, as mentioned by Groovaholic