diff --git a/hexagonal-example/src/main/java/com/baeldung/hexagonalPattern/web/LibraryRestUI.java b/hexagonal-example/src/main/java/com/baeldung/hexagonalPattern/web/LibraryRestUI.java
deleted file mode 100644
index e212fca33d..0000000000
--- a/hexagonal-example/src/main/java/com/baeldung/hexagonalPattern/web/LibraryRestUI.java
+++ /dev/null
@@ -1,24 +0,0 @@
-package com.baeldung.hexagonalPattern.web;
-
-import java.util.List;
-
-import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.PathVariable;
-import org.springframework.web.bind.annotation.PostMapping;
-import org.springframework.web.bind.annotation.RequestBody;
-
-import com.baeldung.hexagonalPattern.core.domain.Book;
-
-public interface LibraryRestUI {
-    // This is the in bound Adapter
-
-    @PostMapping
-    public int insertBook(@RequestBody Book book);
-
-    @GetMapping
-    public Book searchBook(@PathVariable String name);
-
-    @GetMapping
-    public List<Book> listAllBooks();
-
-}