# Uses of Class
org.bukkit.event.block.BlockPistonEvent

Packages that use BlockPistonEvent
Package
Description
org.bukkit.event.block
`Events` relating to when a `block` is changed or interacts with the `world`.

## Uses of BlockPistonEvent in org.bukkit.event.block

Subclasses of BlockPistonEvent in org.bukkit.event.block
Modifier and Type
Class
Description
`class`
`BlockPistonExtendEvent`
Called when a piston extends
`class`
`BlockPistonRetractEvent`
Called when a piston retracts