Resource [Tutorial] How To Make a Plugin

this simple tutorials will give you some basics, we will make a plugin that when type /hi it say to you hello in green
NOTE: if you don't know java learn it by this good tutorial

First Thing Download:
JDK for compile plugin:
Windows 64Bit exe file 198MB
Windows 32Bit exe file 191MB
Linux 64Bit tar.gz file 175MB
Linux 32Bit tar.gz file 179MB
Mac OS X dmg file 226MB
Eclipse for typing plugin:
Windows 64Bit zip file 161MB
Windows 32Bit zip file 161MB
Linux 64Bit tar.gz file 160MB
Linux 32Bit tar.gz file 160MB
Mac OS X tar.gz file 160MB
And download spigot.jar

after setup jdk open eclipse

right click and click on "New Java Project"


name it anything then click next click on "Libraries" tab and click on "add External jars" and go to your spigot.jar then click finish

right click on small triangle next your project name

right click on "src" click on new then click on Package

name the package me. and after the . type your minecraft name example if your minecraft name is steve you will type me.steve and remove the tick from "Create a package-info.java" then click finish

right click on your package and click new then click on class

name it anything then click finish

here we will start coding
first we need extend spigot.jar

Code (Text):

package me.m7mdmcgamer;

public class Main extends JavaPlugin {

}
 

is JavaPlugin is underlined with red ? dont worry its normal because you didnt import it pres ctrl+shift+O in same time

there is a method called onEnable you can type in it any code you want it run when plugin is enabled and there is onDisable like onEnable but when plugin disabled
we want when plugin enabled plugin say in console "Plugin Has Been Enabled" and when disabled "Plugin Has Been Disabled"

first lets type on enable and on disable methods

Code (Text):

package me.m7mdmcgamer;

public class Main extends JavaPlugin {

public void onEnable(){
   //here code you want run when plugin enabled
}
public void onDisable(){
   //here code you want run when plugin disabled
}

}
 

now we will add the command

we need a method called onCommand lets add it

Code (Text):

package me.m7mdmcgamer;

public class Main extends JavaPlugin {

public void onEnable(){
   //here code you want run when plugin enabled

}
public void onDisable(){
   //here code you want run when plugin disabled
   
}
public boolean onCommand(CommandSender sender,Command cmd,String label,String[] args){

}
}
 

now we need to add the command

Code (Text):

package me.m7mdmcgamer;

public class Main extends JavaPlugin {

public void onEnable(){
   //here code you want run when plugin enabled

}
public void onDisable(){
   //here code you want run when plugin disabled

}
public boolean onCommand(CommandSender sender,Command cmd,String label,String[] args){
   if(cmd.getName().equalsIgnoreCase("hi")){
 
    return true;
   }
}
}
 

our command is hi you can make it anything you want
now we made the command but it will not work because we didnt type what to do when command used

Code (Text):

package me.m7mdmcgamer;

public class Main extends JavaPlugin {

public void onEnable(){
   //here code you want run when plugin enabled

}
public void onDisable(){
   //here code you want run when plugin disabled

}
public boolean onCommand(CommandSender sender,Command cmd,String label,String[] args){
   if(cmd.getName().equalsIgnoreCase("hi")){

     sender.sendMessage(ChatColor.GREEN + "Hello!");
     return true;
   }
return true;
}

}
 

sender is the person that typed the command
and you can repeat this for more commands

Code (Text):

   if(cmd.getName().equalsIgnoreCase("hi")){

     sender.sendMessage(ChatColor.GREEN + "Hello!");
     return true;
   }
 

"hi" is the command name you can make it anything
"hello" is the message that will be sent it can be anything
now we made the command but we need to do 1 thing now

right click on project name click on new then click on file

then name it "plugin.yml" then click finish
add in it

Code (Text):

name: PluginName
main: me.m7mdmcgamer.Main
version: 1.0
commands:
    hi:
      description: hello
 

main: is your main class path

then export it and put it in your plugins folder in server