Minecraft is a sandbox game from Mojang, written in
Check for the latest Java. You can find your current version from the command prompt with "java -version"
and install the right Java for your system. Be sure to run the installer as admin, watch out for a possible unannounced reboot.
and install the JavaSE JDK.
instructions to build Spigot and Bukkit
is a Java IDE, popular for some reason
How to learn the
Bukkit Plugin Tutorial
Create a blank project