Uses of Class
org.bukkit.potion.PotionEffectType

Packages that use PotionEffectType 
Package Description
org.bukkit.block
Classes used to manipulate the voxels in a world, including special states.
org.bukkit.entity
Interfaces for non-voxel objects that can exist in a world, including all players, monsters, projectiles, etc.
org.bukkit.event.entity
Events relating to entities, excluding some directly referencing some more specific entity types.
org.bukkit.inventory.meta
The interfaces used when manipulating extra data can can be stored inside item stacks.
org.bukkit.potion
Classes to represent various potion properties and manipulation.