I am currently making a spigot plugin and I'm using just a DriverManager.getConnection() thing.. Which isn't the most efficient. I am only creating the connection in onEnable() and closing it in onDisable(). But I'd like to convert over to HikariCP. But when I put the Hikari download into my build path, it shows no errors in Eclipse. But however I get a NoClassDefFoundError in my console on my server with the plugin. I've heard I need to use Maven in order to use Hikari, but I have no idea how to do Maven with Eclipse. I've tried just making a pom.xml in my src folder and outside of my src folder. Can someone please give me a clear and detailed explanation on what I must do to use Hikari in my spigot plugin? Also, I'm not sure if Hikari should fix this issue, but I've been having an issue with MySQL connections via. Java recently. It is still unsolved and I am wondering if switching to Hikari will solve this issue for me.