This plugin displays information whenever an event is fired.
I wrote this plugin to determine which events I need to use to implement my various plugins, by watching which events get fired when I place and break blocks, dump water or lava, place paintings, break item frames, remove armor from armor stands, put mine carts on rails, sleep in beds, and interact with all these things in various ways. I figured others might find it useful, so I'm sharing it with the world.
The properties file lets you select which events you want to know about, and which you don't, since monitoring all of them at once results in a useless flood of information.
I'm giving you the source so you can customize it for your own needs; maybe you only want to monitor a couple of events and don't want all this overhead slowing your server down, or you want the information presented in a more friendly way, whatever warps your starship.
To install this plugin, copy the plugin JAR file to your server's plugins folder. Once you run it, it will create a .properties file that you can edit to select which events you want to monitor.
The source listing is too big to post here. But the source is included in the .JAR. To get to it easily, rename it from .JAR to.ZIP and you can go into it like a folder and see the source. Or message me if you want me to email you the source.