diff --git a/core-java-modules/core-java-lang-5/src/main/java/com/baeldung/imports/specific/Book.java b/core-java-modules/core-java-lang-5/src/main/java/com/baeldung/imports/specific/Book.java
new file mode 100644
index 0000000000..5877147082
--- /dev/null
+++ b/core-java-modules/core-java-lang-5/src/main/java/com/baeldung/imports/specific/Book.java
@@ -0,0 +1,17 @@
+package com.baeldung.imports.specific;
+
+import java.util.Date;
+import java.util.List;
+import java.util.UUID;
+
+public class Book {
+
+    private UUID id;
+
+    private String name;
+
+    private Date datePublished;
+
+    private List<String> authors;
+
+}
\ No newline at end of file
diff --git a/core-java-modules/core-java-lang-5/src/main/java/com/baeldung/imports/wildcard/Book.java b/core-java-modules/core-java-lang-5/src/main/java/com/baeldung/imports/wildcard/Book.java
new file mode 100644
index 0000000000..18754cdd28
--- /dev/null
+++ b/core-java-modules/core-java-lang-5/src/main/java/com/baeldung/imports/wildcard/Book.java
@@ -0,0 +1,15 @@
+package com.baeldung.imports.wildcard;
+
+import java.util.*;
+
+public class Book {
+
+    private UUID id;
+
+    private String name;
+
+    private Date datePublished;
+
+    private List<String> authors;
+
+}
\ No newline at end of file
diff --git a/core-java-modules/core-java-lang-5/src/main/java/com/baeldung/imports/wildcard/BookView.java b/core-java-modules/core-java-lang-5/src/main/java/com/baeldung/imports/wildcard/BookView.java
new file mode 100644
index 0000000000..e6e21ab03d
--- /dev/null
+++ b/core-java-modules/core-java-lang-5/src/main/java/com/baeldung/imports/wildcard/BookView.java
@@ -0,0 +1,17 @@
+package com.baeldung.imports.wildcard;
+
+import java.awt.*;
+import java.util.*;
+import java.util.List;
+
+public class BookView extends Frame {
+
+    private UUID id;
+
+    private String name;
+
+    private Date datePublished;
+
+    private List<String> authors;
+
+}
\ No newline at end of file
diff --git a/core-java-modules/core-java-lang-5/src/main/java/com/baeldung/imports/wildcard/Library.java b/core-java-modules/core-java-lang-5/src/main/java/com/baeldung/imports/wildcard/Library.java
new file mode 100644
index 0000000000..8e1d79aca4
--- /dev/null
+++ b/core-java-modules/core-java-lang-5/src/main/java/com/baeldung/imports/wildcard/Library.java
@@ -0,0 +1,19 @@
+package com.baeldung.imports.wildcard;
+
+import java.util.*;
+import java.sql.*;
+import java.sql.Date;
+
+public class Library {
+
+    private UUID id;
+
+    private String name;
+
+    private Time openingTime;
+
+    private Time closingTime;
+
+    private List<Date> datesClosed;
+
+}
\ No newline at end of file