minecraft-kajetans-text-core-mod/src/main/java/me/ktcm/KajetansTextCoreMod.java

package me.ktcm;

import net.minecraft.util.text.StringTextComponent;
import net.minecraftforge.event.ServerChatEvent;
import net.minecraftforge.eventbus.api.SubscribeEvent;
import net.minecraftforge.fml.common.Mod;

@Mod.EventBusSubscriber
@Mod("ktcm")
public class KajetansTextCoreMod
{
    @SubscribeEvent
    public static void beforeStart(ServerChatEvent e) 
    {
        e.setComponent(new StringTextComponent(e.getMessage().replace("&", "§")));
    }
}