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# Blacklist

Create your own blacklist class implement from IBlacklist

```java
public class BlacklistSimilar implements IBlacklist {

	private final List<ItemStack> itemstacks;

	/**
	 * @param itemstacks
	 */
	public BlacklistSimilar(List<ItemStack> itemstacks) {
		super();
		this.itemstacks = itemstacks;
	}

	@Override
	public String getName() {
		return "Similar itemstack";
	}

	@Override
	public boolean isBlacklist(ItemStack itemStack) {
		return this.itemstacks.stream()
				.anyMatch(stack -> stack != null && itemStack != null && stack.isSimilar(itemStack));
	}

}
```

After your need to use the method `registerBlacklist` in IBlacklistManager class