Each Bukkit plugin requires two specific files. These files are
plugin.yml and the main class of the plugin. We will begin by creating the most basic versions of each of these files. All your future projects will start with the creation of these two files.
Now we are ready to start programming a Bukkit plugin. The first file that we need is
plugin.yml. This is the file that the CraftBukkit server will read to determine how to load your plugin. Right click on Source Packages and click on New | Other... as shown in the following screenshot:
In the window that appears, select Other under Categories ...