stop players breaking a block!

Code:

public void onBlockBreak(BlockBreakEvent event) {
    Player player = event.getPlayer();
            Block block = event.getBlock();

            if(block.getType() == Material.CHEST && (KeepChest.Permissions.has(player, "keepchest.chest"))){
            }
            if(block.getType() == Material.CHEST && (!KeepChest.Permissions.has(player, "keepchest.chest"))){

                player.sendMessage(ChatColor.RED + "Only admins can destroy chests!");
 
            }

That is my code so far.
At the moment, if the player doesnt have the permission it tells them they cant destroy a chest.
I have been playing around and i can't seem to find how to stop the block being destroyed.
Any help would be appreciated!

 

Use

Code:

event.setCancelled( true );

The block will still 'break' client side, but will quickly respawn since nothing actually happened.

 

event.setcancelled(true)

I don't know how i missed that

thanks for this!
I realised before i read your post but it was very helpful!

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