Solved Proper way to check if block is powered

What would be the proper way to detect if a block is powered, preferably when the redstone event changes (if a button is pressed or whatever). The block I want to check does not necessarily have the button on it, but is attached to the redstone circuit.

If it helps - I have a list of blocks and their location that I need to check, so it doesn't need to check everything ever.

Thanks

Using this:

Code:

@EventHandler
    public void onBlockRedstoneEvent(BlockRedstoneEvent evt) {
        Location loc = new Location(evt.getBlock().getWorld(), -230, 80, -29); // This is nonsense, but I just happen to know my block is there.. will pull from my list
        Block b = loc.getBlock();
        if (b != null)
        {
            if (b.equals(evt.getBlock()))
            {
                if (b.isBlockPowered())
                {
                    System.out.println(b.getType().name() + " - Powered");
                }
                else
                {
                    System.out.println(b.getType().name() + " - Not Powered");  
                }
            }
        }
    }

EDIT by Moderator: merged posts, please use the edit button instead of double posting.