使用Minecraft 1.8.9 Forge Modding的Java开发工具包，需要什么JDK/JRE,代码正确吗？

Question

package me.BeastModeGamez.arrowCounter;

import net.minecraft.init.Blocks;
import net.minecraftforge.fml.common.Mod;
import net.minecraftforge.fml.common.Mod.EventHandler;
import net.minecraftforge.fml.common.event.FMLInitializationEvent;

@Mod(modid = ArrowCounter.MODID, version = ArrowCounter.VERSION)
public class ArrowCounter
{
    public static final String MODID = "arrowCounter";
    public static final String VERSION = "1.0";

    @EventHandler
    public void init(FMLInitializationEvent event)
    {


    }
}

package me.BeastModeGamez.arrowCounter.commands;

import net.minecraft.command.CommandBase;
import net.minecraft.command.CommandException;
import net.minecraft.command.ICommandSender;
import net.minecraft.util.ChatComponentText;

public class arrowCounterCommands extends CommandBase {

    @Override
    public String getCommandName() {
    return "arrowcounter";
    }

    @Override
    public String getCommandUsage(ICommandSender sender) {
        return "/" + getCommandName();
    }

    @Override
    public void processCommand(ICommandSender sender, String[] args) throws CommandException {
        sender.addChatMessage(new ChatComponentText("Test Command."));

    }

    @Override
    public int getRequiredPermissionLevel() {
        return 0;
    }

    @Override
    public boolean canCommandSenderUseCommand(final ICommandSender p_71519_1_) {
    return true;
    }

}