Remove keys from config file

Hello guys, I need some help here.
Is there any way to remove a key from the config file?

 

Using Properties or Configuration class?

 

configuration

here take a look at my main class :

Code:java

 
package me.beatcomet.RC;
 
import java.io.File;
import java.util.logging.Logger;
 
import org.bukkit.ChatColor;
import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.inventory.ItemStack;
import org.bukkit.plugin.PluginDescriptionFile;
import org.bukkit.plugin.java.JavaPlugin;
import org.bukkit.util.config.Configuration;
 
import com.nijiko.permissions.PermissionHandler;
import com.nijikokun.bukkit.Permissions.Permissions;
import org.bukkit.plugin.Plugin;
 
public class RC extends JavaPlugin{
	Logger log = Logger.getLogger("Minecraft");
	File configFile = new File("plugins/" + "RC" + "/codes.xD1");
	Configuration config = new Configuration(configFile);
	public static PermissionHandler permissionHandler;
	private void setupPermissions() {
	    if (permissionHandler != null) {
	        return;
	    }
	    Plugin permissionsPlugin = this.getServer().getPluginManager().getPlugin("Permissions");
	    if (permissionsPlugin == null) {
	        log.info("Permission system not detected, defaulting to OP");
	        return;
	    }
	    permissionHandler = ((Permissions) permissionsPlugin).getHandler();
	    log.info("Found and will use plugin "+((Permissions)permissionsPlugin).getDescription().getFullName());
	}
 
	public void onDisable(){
		PluginDescriptionFile pdf = this.getDescription();
		log.info(pdf.getName() + " Version " + pdf.getVersion() + " is DISABLED!");
	}
	public void onEnable(){
		PluginDescriptionFile pdf = this.getDescription();
		log.info(pdf.getName() + " Version " + pdf.getVersion() + " is ENABLED!");
		setupPermissions();
		new File("plugins/" + "RC").mkdir();
		if (!configFile.exists()) {
			try {
				configFile.createNewFile();
 
			} catch (Exception e) {
				// sending console message in case the data file could not be
				// created
				log.info("[Freeze] Error when creating config file.");
			}
		}
		// Loading data file
		config.load();
	}
	public boolean onCommand(CommandSender sender, Command cmd, String commandLabel, String[] args){
		if(sender instanceof Player){
			Player p = (Player) sender;
			String type;
			String amount;
			String name;
			if(commandLabel.equalsIgnoreCase("code") && args.length == 4 && RC.permissionHandler.has(p, "code.set")){
				if(args[0].equalsIgnoreCase("set")){
					name = args[1];
					type = args[2];
					amount = args[3];
					config.setProperty(name + "." + "id", Integer.parseInt(type));
					config.setProperty(name + "." + "amount", Integer.parseInt(amount));
					config.save();
					p.sendMessage(ChatColor.DARK_PURPLE + "[RC]" + ChatColor.BLACK + name + ChatColor.AQUA + " Has Beed Added To The Code List!");
				}return true;
			}
			if(commandLabel.equalsIgnoreCase("redeem")){
				if(args.length == 0){
					p.sendMessage(ChatColor.DARK_PURPLE + "[RC]" + ChatColor.RED  + "No code inserted!");
				}
				if(args.length > 1){
				p.sendMessage(ChatColor.DARK_PURPLE + "[RC]" + ChatColor.RED  + "Invalid code inserted!");
				}
				if(args.length == 1){
					String code = args[0];
					if(config.getKeys(code) == null){
						p.sendMessage(ChatColor.DARK_PURPLE + "[RC]" + ChatColor.RED  + "No code found");
					}else{
						int amnt = (Integer) config.getProperty(args[0] + "." + "amount");
						int typeid = (Integer) config.getProperty(args[0] + "." + "id");
						p.getInventory().addItem(new ItemStack(amnt, typeid));
						p.sendMessage(ChatColor.DARK_PURPLE + "[RC]" + ChatColor.BLACK  + args[0] + ChatColor.AQUA + " Redeemed!");
					}
				}return true;
			}if(commandLabel.equalsIgnoreCase("code") && args.length == 2 && RC.permissionHandler.has(p, "code.remove")){
				if(args[0].equalsIgnoreCase("Remove")){
					String key = args[1];
					if(config.getKeys(key) != null){
						config.removeProperty(args[1]+"."+"amount");
						config.removeProperty(args[1]+"."+"id");
						config.save();
						p.sendMessage(ChatColor.DARK_PURPLE + "[RC]" + ChatColor.BLACK  + key + ChatColor.AQUA + " Removed!");
					}
					if(config.getKeys(key) == null){
						p.sendMessage(ChatColor.DARK_PURPLE + "[RC]" + ChatColor.BLACK  + key + ChatColor.AQUA + " Does Not Exist!");
					}
				}return true;
			}
		}if(!(sender instanceof Player)){
			log.info("You cannot reddem or set codes using console commands!");
		}
		return false;
	}
}

It's not finished yet so...

 

Hmm, I see. Well, You can either use Configuration c = new Configuration(configFile); or Properties prop = new Properties();. I like both

 

So is there a way to remove keys?

 

I know there is in the Properties thingy, that's prop.removeKey or something similar, and in Configuraion there also is one. Need small code snippet?

 

yea

 

static File Settings = new File("plugins/Skillz/settings.yml");
Configuration c = new Configuration(Settings);
c.removeProperty("Node");

 

It just removed the property, not the ket itself...

 

Oh, I thought it would remove everything. You can also do

Code:

Properties prop = new Properties();
try{
FileInputStream in = new FileInputStream(settings);
prop.load(in);
prop.remove("Key");
}catch(IOException e){
e.printStackTrace();
}

 

I don't really like it...
I am too lazy and rewriting all the code is not an easy task.
I will leave it as it is right now.
Thanks for trying

BTW the plugin will probably be released today under the name of RC (Redeem codes).