Setting a Lever in the Powered Position.

Chinwe
In the code below, I'm attempting to set a placed lever into the powered position.
I'm getting a class cast exception on the line that looks like

Code:

 Lever l = (Lever) s1.getBlock().getState();

Code:java

 public void voteEnd(){
World w = Bukkit.getWorld("world");
double sx1 = -1.5;
double sy1 = 67;
double sz1 = 9;
double sx2 = 0.5;
double sx3 = 2.5;
 
final Location s1 = new Location(w,sx1,sy1,sz1);
final Location s2 = new Location(w,sx2,sy1,sz1);
final Location s3 = new Location(w,sx3,sy1,sz1);
Bukkit.getScheduler().scheduleSyncDelayedTask(this, new Runnable(){
public void run(){
if(song1.size() > song2.size() && song1.size() > song3.size() && song1.size() > song4.size()){
Bukkit.getServer().broadcastMessage(ChatColor.GREEN + ""+ ChatColor.BOLD + "Sail by Awolnation has won the vote with " + song1.size() + "votes!");
Bukkit.getServer().broadcastMessage(ChatColor.BLUE + "Playing Sail!");
if(s1.getBlock().getType() == Material.LEVER){
Lever l = (Lever) s1.getBlock().getState();
l.setPowered(true);
song1End();

 

Code:JAVA

 
Level l = (Lever) s1.getBlock().getState().getData();
 

 

Yup, like RealDope said, as the type Lever is a kind of MaterialData, whereas other types like Chests are blocks, and therefore you cast from the BlockState

If you find it in the JavaDocs, you can tell from the link:
http://jd.bukkit.org/rb/apidocs/org/bukkit/block/Chest.html -> BlockState
http://jd.bukkit.org/rb/apidocs/org/bukkit/material/Lever.html -> MaterialData (blockstate.getData())