Bukkit Plugin Fail #1

package me.DibDibsTH13TEEN.HealAll;

import java.util.logging.Logger;

import org.bukkit.ChatColor;
import org.bukkit.Server;
import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.plugin.PluginDescriptionFile;
import org.bukkit.plugin.java.JavaPlugin;

public class HealAll extends JavaPlugin {

    public final Logger logger = Logger.getLogger("Minecraft");

    public static HealAll plugin;

    @Override
    public void onDisable() {
        PluginDescriptionFile pdfFile = this.getDescription();
        this.logger.info(pdfFile.getName() + "Has Been Disabled");


    }

    @Override
    public void onEnable() {
        PluginDescriptionFile pdfFile = this.getDescription();
        this.logger.info(pdfFile.getName() + " V" + pdfFile.getVersion() + "Has Been Enabled");


    }



    public boolean onCommand(CommandSender sender, Command cmd, String commandLabel, String[] args){
        Player player = (Player) sender;
        if(commandLabel.equalsIgnoreCase("heal") || commandLabel.equalsIgnoreCase("h")){
            if(args.length == 0){
                player.setHealth(20);
            }else if(args.length == 1){
                Player targetPlayer = player.getServer().getPlayer(args [0]);
                targetPlayer.setHealth(20);
                player.sendMessage(ChatColor.RED + "You Have Been Healed by" + player);
        }
        else if(commandLabel.equalsIgnoreCase("HealAll")|| commandLabel.equalsIgnoreCase("HA"));
            if(args.length == 0){
                Player targetPlayer = Server.getOnlinePlayers();
                targetPlayer.setHealth(20);
                player.sendMessage(ChatColor.RED + "You Have Been Healed by" + player);

            }
        }
        return false;
    }


}