Roulette plugin

package me.jaycow.Roulette;

import java.util.logging.Logger;

import org.bukkit.ChatColor;
import org.bukkit.plugin.PluginDescriptionFile;
import org.bukkit.plugin.java.JavaPlugin;

public class Roulette extends JavaPlugin {

    String roulette = (ChatColor.BLACK + "[" + ChatColor.DARK_RED + "Roulette" + ChatColor.BLACK + "]" + ChatColor.GRAY);

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

    @Override
    public void onDisable() {
        PluginDescriptionFile pdffile = this.getDescription();
        this.logger.info(pdffile.getName() + " is now disabled.");
    }

    @Override
    public void onEnable() {
        PluginDescriptionFile pdffile = this.getDescription();
        this.logger.info(pdffile.getName() + " version " + pdffile.getVersion() + " is now enabled.");
        getCommand( "roulette" ).setExecutor( new CommandParser( ) );
    }

}

package me.jaycow.Roulette;

import org.bukkit.ChatColor;
import org.bukkit.Material;
import org.bukkit.command.Command;
import org.bukkit.command.CommandExecutor;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.inventory.ItemStack;
import org.bukkit.inventory.PlayerInventory;

public class CommandParser implements CommandExecutor {
    String roulette = (ChatColor.BLACK + "[" + ChatColor.DARK_RED + "Roulette" + ChatColor.BLACK + "]" + ChatColor.GRAY);

    @SuppressWarnings("deprecation")
    public boolean onCommand(CommandSender sender, Command command, String label, String[] args) {

        // Check if the sender is a player or the server
        Player player = null;
        if (sender instanceof Player) player = (Player) sender;

            if ( args.length < 2 ) return false;

            // initialize input variables
            int pickedNumber = 0;
            int bet = 0;
            // verify input values are integers
            try {
                pickedNumber = Integer.parseInt(args[0]);
                bet = Integer.parseInt(args[1]);
        } catch( NumberFormatException e ) {}

            // betting engine
            if( bet > 0 ) {

                PlayerInventory inventory = player.getInventory();
                ItemStack placedBet = new ItemStack(Material.DIAMOND, bet);
                int winAmt = bet * 3;
                ItemStack wonDiamonds = new ItemStack(Material.DIAMOND, winAmt);

                // Check to make sure player has enough diamonds to bid!
                if (!inventory.contains(Material.DIAMOND, bet)) {
                    player.sendMessage(roulette + " You do not have the amount of diamonds you wish to wager!");
                    return true;
                } else inventory.removeItem(placedBet);
                    int secretNumber = (int) (Math.random() * 74 + 1);
                    if(pickedNumber == secretNumber) {
                        player.sendMessage(roulette + ChatColor.GREEN + " You win!" + ChatColor.GRAY + " You picked " + ChatColor.YELLOW + pickedNumber + ChatColor.GRAY + " and the wheel landed on " + ChatColor.YELLOW + secretNumber + ChatColor.GRAY + "!");
                        inventory.addItem(wonDiamonds);
                        player.sendMessage(roulette + ChatColor.YELLOW + " " + winAmt + ChatColor.AQUA + " diamonds" + ChatColor.GRAY + " have been added to your inventory.");
                        player.updateInventory();
                    } else if(pickedNumber < 1) {
                        player.sendMessage(roulette + " You must pick a number between " + ChatColor.YELLOW + "1 " + ChatColor.GRAY + "and" + ChatColor.YELLOW + " 75" + ChatColor.GRAY + ".");
                        inventory.addItem(placedBet);
                        player.updateInventory();
                    } else if(pickedNumber > 75) {
                        player.sendMessage(roulette + " You must pick a number between " + ChatColor.YELLOW + "1 " + ChatColor.GRAY + "and" + ChatColor.YELLOW + " 75" + ChatColor.GRAY + ".");
                        inventory.addItem(placedBet);
                        player.updateInventory();
                    } else if(pickedNumber != secretNumber) {
                        player.sendMessage(roulette + ChatColor.RED + " You lose!" + ChatColor.GRAY + " You picked " + ChatColor.YELLOW + pickedNumber + ChatColor.GRAY + " and the wheel landed on " + ChatColor.YELLOW + secretNumber + ChatColor.GRAY + "!");
                        player.sendMessage(roulette + ChatColor.YELLOW + " " + bet + ChatColor.AQUA + " diamonds" + ChatColor.GRAY + " have been removed from your inventory.");
                        player.updateInventory();
                    } return true;

                } return false;
}
}