Solved Making part of plugin sleep for 2 seconds

Ok so i'm making plugin on my server and i'm trying to make tnt run plugin and i need somehow stop one part of plugin for couple seconds (when block gets destroyed below you) How to do it?

 

http://wiki.bukkit.org/Scheduler_Programming

 

BukkitTask task = new ExampleTask(this.plugin).runTaskLater(this.plugin, 20);
this one?

 

new BukkitRunnable() {
@Override
public void run() {
//code to be executed
}
}.runTaskLater(plugin, 40L);

 

Can someone fully explain me how their methods work and dont just copy paste it?
@justin_393

 

Use what
@justin_393 said. .runTaskLater runs the code in the method "run" after a specified amount of time (ticks). The first parameter must be the instance of your plugins main class and the second parameter must be the time in ticks (20 ticks = 1 second)