package threedprojectiles;

import net.minecraftforge.fml.common.event.FMLInitializationEvent;
import net.minecraftforge.fml.common.event.FMLPostInitializationEvent;
import net.minecraftforge.fml.common.event.FMLPreInitializationEvent;

public class CommonProxy {

    public void preInit(FMLPreInitializationEvent e) {

    }

    public void init(FMLInitializationEvent e) {

    }

    public void postInit(FMLPostInitializationEvent e) {

    }
}

Create CommonProxy.java