Nether Portal World TP Plugin - (Need Help)

Hey,
I want to program a plugin with which I netherportale through the blocks which can be used under the portals are the portal to another world bring.
(You can see it on the picture)
I'm still beginner and wanted to ask if someone can help me.
I apologize for the English (Google Translate)
I would be very happy about an answer
Flo



I have done this:
#

Code:

package listeners;

import org.bukkit.event.EventHandler;
import org.bukkit.event.EventPriority;
import org.bukkit.event.Listener;
import org.bukkit.event.player.PlayerPortalEvent;

public class NetherportalEvent implements Listener{
   
    @EventHandler(priority=EventPriority.HIGHEST, ignoreCancelled=true)
      public void onPlayerPortal(PlayerPortalEvent event) {
       
    }
    }

 

Ok, the structure would be:
1. you store the location of poral 1 and the respective location of portal 2 somehow.
2. on portal event, you check if this portal is at any of the stored locations, and if it is, you cancel the normal operation of the portal and teleport the user manually.

 

Thank you for the answer.
I have no idea how i can programm this, because im a beginner in bukkit Coding.
But i can't find a nice plugin who can this.

Flo