Client it can print but server not print.

 

@SubscribeEvent

public void onEvent(LivingDeathEvent entity)

{

System.out.println("Boing");

}

That should work on both sides. How are you registering the event handler?

I have already registered. but it can't print.

 

main file.

    @EventHandler

    public void preInit(FMLPreInitializationEvent event)

    {

    MinecraftForge.EVENT_BUS.register(new EventManager());

    }

 

file.

public class EventManager {

 

@SubscribeEvent

public void onEvent(LivingDeathEvent entity)

{

System.out.println("Boing");

}

}

How do you know it's not printing on the server? Are you checking the server output log? Also, why are you so certain it is printing on the client and not the server? "Boing" isn't exactly descriptive, especially when using System.out.println instead of a Logger.

Also, your event variable shouldn't be called entity.

 

Just saying.