Solved Caused by: java.lang.UnsupportedClassVersionError: me/mctv/evilvsgood/Main : Unsupported major.minor

I'm getting an error in the console of my server, and this plugin is causing it. How can I fix this? I'm using spigot 1.8.3 and compiling using java 1.7.0

This is my main class:

Code:

package me.mctv.evilvsgood;

import org.bukkit.plugin.PluginManager;
import org.bukkit.plugin.java.JavaPlugin;

public class Main extends JavaPlugin {
   
    private static Main instance;
   
    public void log(String string) {
        System.out.println(string);
    }
   
    public static Main getInstance() {
        return instance;
    }
   
    public void registerListeners() {
        PluginManager pm = getServer().getPluginManager();
        pm.registerEvents(new onPlayerJoin(this), this);
       
    }
   
    public void registerCommands() {
       
    }
   
    @Override
    public void onEnable() {
        getLogger().info("Plugin Enabled!");
        registerCommands();
        registerListeners();
    }
   
    @Override
    public void onDisable() {
        getLogger().info("Plugin Disabled!");
    }

}

And my onPlayerJoin class:

Code:

package me.mctv.evilvsgood;

import java.util.ArrayList;

import org.bukkit.Material;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.player.PlayerJoinEvent;
import org.bukkit.inventory.ItemStack;
import org.bukkit.inventory.meta.ItemMeta;

import net.md_5.bungee.api.ChatColor;

public class onPlayerJoin implements Listener {
    public onPlayerJoin(Main plugin) {
        plugin.getServer().getPluginManager().registerEvents(this, plugin);
    }
private ArrayList<String> NewPlayers = new ArrayList<String>();
   
    @EventHandler
    public void onPlayerJoin(PlayerJoinEvent evt) {
        Player player = evt.getPlayer();
        String pname = player.getName();
        if(!player.hasPlayedBefore()) {
            player.getInventory().clear();
            ItemStack chooseside = new ItemStack(Material.CHEST);
            ItemMeta m = chooseside.getItemMeta();
            m.setDisplayName(" " + ChatColor.GOLD + ChatColor.BOLD + "Choose Side");
            chooseside.setItemMeta(m);
            player.getInventory().setItem(4, chooseside);
           
        }
    }
   

}

 

Your server has java 7, bit you compiled your plugin with java 8, recompile it or get a better host.

 

As I said in the post, I have compiled with java 1.7

I am so sorry, I didn't set it to compile with 1.7 in the configuration of the project

 

@MCTV
Use the edit button next time instead of double posting please.