diff --git a/Bibliotheksverwaltung/src/DomainLayer/Book.java b/Bibliotheksverwaltung/src/DomainLayer/Book.java
new file mode 100644
index 0000000..fdf1776
--- /dev/null
+++ b/Bibliotheksverwaltung/src/DomainLayer/Book.java
@@ -0,0 +1,36 @@
+package DomainLayer;
+
+import java.time.LocalDate;
+
+public class Book extends Medium {
+    public Book(String id, String title, String releaseYear) {
+        super(id, title, releaseYear);
+    }
+
+    @Override
+    public int getBorrowPeriod() {
+        return 28; // 4 Wochen
+    }
+
+    @Override
+    public boolean isRenewable() {
+        return true; // Verlängerung möglich
+    }
+
+    @Override
+    public int getMaxRenewals() {
+        return 3; // Bis zu 3 Mal verlängerbar
+    }
+
+	@Override
+	public String getAuthor() {
+		// TODO Auto-generated method stub
+		return null;
+	}
+
+	@Override
+	public void setBorrowDate(LocalDate currentDate) {
+		// TODO Auto-generated method stub
+		
+	}
+}