diff --git a/src/main/java/org/maxgamer/quickshop/Shop/Shop.java b/src/main/java/org/maxgamer/quickshop/Shop/Shop.java
new file mode 100644
index 0000000..67aa1c1
--- /dev/null
+++ b/src/main/java/org/maxgamer/quickshop/Shop/Shop.java
@@ -0,0 +1,78 @@
+package org.maxgamer.quickshop.Shop;
+
+import java.util.List;
+import java.util.UUID;
+
+import org.bukkit.Location;
+import org.bukkit.block.Block;
+import org.bukkit.block.Sign;
+import org.bukkit.entity.Player;
+import org.bukkit.inventory.ItemStack;
+
+public abstract interface Shop {
+	public abstract Shop clone();
+
+	public abstract int getRemainingStock();
+
+	public abstract int getRemainingSpace();
+
+	public abstract boolean matches(ItemStack paramItemStack);
+
+	public abstract Location getLocation();
+
+	public abstract double getPrice();
+
+	public abstract void setPrice(double paramDouble);
+
+	public abstract void update();
+
+	public abstract short getDurability();
+
+	public abstract UUID getOwner();
+
+	public abstract ItemStack getItem();
+
+	public abstract void remove(ItemStack paramItemStack, int paramInt);
+
+	public abstract void add(ItemStack paramItemStack, int paramInt);
+
+	public abstract void sell(Player paramPlayer, int paramInt);
+
+	public abstract void buy(Player paramPlayer, int paramInt);
+
+	public abstract void setOwner(UUID paramString);
+
+	public abstract void setUnlimited(boolean paramBoolean);
+
+	public abstract boolean isUnlimited();
+
+	public abstract ShopType getShopType();
+
+	public abstract boolean isBuying();
+
+	public abstract boolean isSelling();
+
+	public abstract void setShopType(ShopType paramShopType);
+
+	public abstract void setSignText();
+
+	public abstract void setSignText(String[] paramArrayOfString);
+
+	public abstract List<Sign> getSigns();
+
+	public abstract boolean isAttached(Block paramBlock);
+
+	public abstract String getDataName();
+
+	public abstract void delete();
+
+	public abstract void delete(boolean paramBoolean);
+
+	public abstract boolean isValid();
+
+	public abstract void onUnload();
+
+	public abstract void onLoad();
+
+	public abstract void onClick();
+}
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