Casting Problems?

Hey peoplez I've been currently trying to add sign integration to my plugin. I have however gotten alot of trouble.

Here is the code for the event that is given me trouble:

Code:java

@EventHandler
    public void onSignClick(PlayerInteractEvent event){
        Block block = event.getClickedBlock();
        Player player = event.getPlayer();
        Sign sign = (Sign) block.getState();
        if(event.getAction() == Action.RIGHT_CLICK_BLOCK){
            if (block.getType() == Material.SIGN_POST || block.getType() == Material.SIGN || block.getType() == Material.WALL_SIGN){
              if (player.hasPermission("EasyPvpKits.Sign.Use")){
                  if (sign.getLine(1).equalsIgnoreCase(ChatColor.DARK_BLUE + "Pvp")){
                      player.performCommand("Pvp");
                }
                if (sign.getLine(1).equalsIgnoreCase(ChatColor.DARK_BLUE + "Archer")){
                    player.performCommand("Archer");
                }
                if (sign.getLine(1).equalsIgnoreCase(ChatColor.DARK_BLUE + "Heavy")){
                    player.performCommand("Heavy");
                }
                if (sign.getLine(1).equalsIgnoreCase(ChatColor.DARK_BLUE + "Assassin")){
                    player.performCommand("Assassin");
                }
                if (sign.getLine(1).equalsIgnoreCase(ChatColor.DARK_BLUE + "Pyro")){
                    player.performCommand("Pyro");
                } 
              }   
            }
        }
    }    

Whenever I click a block that isn't a sign it gives me

Code:java

Caused by: java.lang.NullPointerException
        at com.gmail.codervortex.EasyPvpKits.onSignClick(EasyPvpKits.java:131) ~

Line 131 is:

Code:java

Sign sign = (Sign) block.getState();

And when I do click a sign it gives me this:

Code:java

Caused by: java.lang.ClassCastException: org.bukkit.craftbukkit.v1_7_R1.block.CraftBlockState cannot be cast to org.bukkit.block.Sign

Can someone please help me? I know its one line and probably a second to fix but I have really busy lately and it is right in front of my nose. I feel really stupid for not knowing how to fix it. Anyways thanks in advance.

 

I don't know much about casting, but possibly because you set a variable called Block then try to send it to sign? Try this. Let me know if I can help anymore.

Sign sign = (Sign) event.getClickedBlock().getState();

 

22vortex22 Casting is not a magic that allows you to turn any type into another type.

Casting only lets you tell the compiler which does not have full information, that this BlockState is really a Sign. The JVM at runtime will make sure that the BlockState is indeed a Sign. If you are wrong however, the JVM will throw a ClassCastException.

 

Sagacious_Zed That aswell, listen to that man!

 

Now, when I don't click a sign it gives me

Code:java

Caused by: java.lang.ClassCastException: org.bukkit.craftbukkit.v1_7_R1.block.CraftBlockState cannot be cast to org.bukkit.block.Sign

 

22vortex22 Did you even read what Sagavious_Zed said? (didnt tag since its a useless tag)

You're casting the block before even checking if the block is a sign.

 

Sorry my internet is slow here so by the time it got sent he already replied.