No commands working?

Hi guys, I'm learning to make plugins at the moment. This is what i'm working on right now. It's a simple healing plugin. When I put it on the server and try a command absolutely nothing happens. It doesn't even say internal error or unknown command, just nothing happens. Help please?
Here is the pastebin link:

http://pastebin.com/HaBvwEsS

And here it is in a Bukkit thing:

Code:java

package me.Antonio.Test;
 
import java.util.logging.Logger;
 
import org.bukkit.command.Command;
import org.bukkit.entity.Player;
import org.bukkit.plugin.PluginDescriptionFile;
import org.bukkit.plugin.java.JavaPlugin;
 
public class Test extends JavaPlugin{
public static Test plugin;
public Logger logger = Logger.getLogger("Minecraft");
 
@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() + " has been enabled!");
}
 
public boolean onCommand(Command sender, Command cmd, String commandLabel, String [] args){
Player player = (Player) sender;
if(commandLabel.equalsIgnoreCase("heal") || commandLabel.equalsIgnoreCase("h")){
if (args.length == 0){
player.setHealth(20.0);
player.sendMessage("You healed yourself!");
}else if (args.length == 1){
if(player.getServer().getPlayer(args [0]) != null){
Player targetPlayer = player.getServer().getPlayer(args [0]);
targetPlayer.setHealth(20.0);
targetPlayer.sendMessage("You were healed!");
}else{
player.sendMessage("Player is offline.");
}
}
}
return false;
}
 
 
}

Thanks so much.
Antonio

 

Here is the error:

Code:

public boolean onCommand(Command sender, Command cmd, String commandLabel, String [] args){

And here the fixed line:

Code:

public boolean onCommand(CommandSender sender, Command cmd, String commandLabel, String [] args){

Next time add @Override to the command method, it's not necessary, but the IDE will show a error, if the class JavaPlugin has no method with that parameters to override. And don't forget to add the command in the plugin.yml, if you haven't.

 

Caprei & Seadragon91
He could implement CommandExecutor after extending JavaPlugin. Then his IDE would make him enter it correctly.

 

Thank you so much both of you! Eternal gratitude haha.