implement config to set custom time

src/config.yml

@@ -0,0 +1,3 @@
+# The time (in milliseconds) to shutdown the server when no one is on.
+# Default is 20 seconds (or 20000 ms)
+shutdownAfter: 20000

src/pw/chew/noplayersnoserver/HelpCommand.java

@@ -9,13 +9,11 @@ public class HelpCommand implements CommandExecutor {
 
     // This method is called, when somebody uses our command
     public boolean onCommand(CommandSender sender, Command command, String label, String[] args) {
-      if (sender instanceof Player) {
-          Server server = sender.getServer();
-          int players = server.getOnlinePlayers().size();
+      Server server = sender.getServer();
+      int players = server.getOnlinePlayers().size();
 
-          Player p = (Player) sender;
-          p.sendMessage("Welcome to NPNS!\nThis plugin works automatically. Just leave and 10 seconds later the server will stop!\nCurrently there are " + players + " player(s) online");
-      }
+      Player p = (Player) sender;
+      p.sendMessage("Welcome to NPNS!\nThis plugin works automatically. Just leave and a set amount of seconds later the server will stop!\nCurrently there are " + players + " player(s) online!\nThe server is set to shutdown after " + NoPlayersNoServer.time + " milliseconds.");
 
       // If the player (or console) uses our command correct, we can return true
       return true;

src/pw/chew/noplayersnoserver/NoPlayersNoServer.java

@@ -1,10 +1,18 @@
 package pw.chew.noplayersnoserver;
+import org.bukkit.configuration.file.FileConfiguration;
 import org.bukkit.plugin.java.JavaPlugin;
 
 public class NoPlayersNoServer extends JavaPlugin {
+  static int time = 0;
   // Fired when plugin is first enabled
   TimerUntilBye timer = new TimerUntilBye();
   public void onEnable() {
+    FileConfiguration config = this.getConfig();
+    config.addDefault("shutdownAfter", 20000);
+    config.options().copyDefaults(true);
+    saveConfig();
+    time = config.getInt("shutdownAfter");
+
     this.getCommand("npns").setExecutor(new HelpCommand());
     getServer().getPluginManager().registerEvents(new ByeByePlayer(), this);
     System.out.println("Timer won't activate until someone leaves.");
@@ -13,4 +21,8 @@ public void onEnable() {
   public void onDisable() {
 
   }
+
+  public int getTime() {
+    return time;
+  }
 }

src/pw/chew/noplayersnoserver/TimerUntilBye.java

@@ -20,7 +20,7 @@ public TimerUntilBye() {
   }
 
   public void startTimer() {
-    timer.schedule(task, 20000, 5000);
+    timer.schedule(task, NoPlayersNoServer.time, 5000);
   }
 
   public void restartTimer() {