Added a diamond armor blocker

src/alisolarflare/DiamondArmorBlocker.java

@@ -0,0 +1,49 @@
+package alisolarflare;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+import org.bukkit.Material;
+import org.bukkit.Sound;
+import org.bukkit.enchantments.Enchantment;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.Listener;
+import org.bukkit.event.inventory.CraftItemEvent;
+import org.bukkit.inventory.ItemStack;
+
+public class DiamondArmorBlocker implements Listener{
+	public static List<Material> blockedItems = Arrays.asList(Material.DIAMOND_BOOTS, Material.DIAMOND_CHESTPLATE, Material.DIAMOND_LEGGINGS, Material.DIAMOND_HELMET);
+	@EventHandler
+	public void onArmorSmith(CraftItemEvent event){
+		//SANITATION - hardcore
+		if(event.getWhoClicked().getWorld().getName() != "hardcore"){
+			return;
+		}
+		
+		//INIT - inventory, targetItem
+		ItemStack targetItem = event.getRecipe().getResult();
+		
+		//REPLACE - Diamond Chestplate > Chainmail Chestplate
+		if (blockedItems.contains(targetItem.getType())){
+			event.setCancelled(true);			
+			//GIVE - chainmail chestplate
+			event.getWhoClicked().getInventory().addItem(failArmor(targetItem.getType()));
+			//PLAY - cave sound
+			event.getWhoClicked().getWorld().playSound(event.getWhoClicked().getLocation(), Sound.AMBIENT_CAVE,0,0);
+			event.getWhoClicked().getWorld().playSound(event.getWhoClicked().getLocation(), Sound.ENTITY_ITEM_BREAK,0,0);
+		}
+		
+		
+	}
+	public ItemStack failArmor(Material material){
+		ItemStack failArmor = new ItemStack(material);
+		failArmor.addEnchantment(Enchantment.THORNS, 1);
+		
+		//INIT - Chainmail's lore
+		List<String> loreString = new ArrayList<String>();
+		loreString.add("This world is forever dangerous. There is no protection here");
+		failArmor.getItemMeta().setLore(loreString);
+		return failArmor;
+	}
+}